The Kardashians

2:18 PM PT -- It appears Twitter has now also removed the nude photos of Chyna from Rob's account.

It seems Instagram has had it with Rob Kardashian's revenge porn against Blac Chyna, 'cause they just shut down his page.

Rob tweeted Wednesday ... "Since Instagram shut me down everyone peep my twitter lol" ... and then proceeded to post the same nudes of his ex on Twitter.

As we reported ... Rob's on a social media rampage against Chyna after he allegedly caught her cheating, posting naked pictures of her as well as text messages from her and her alleged side pieces.

It's unlikely Rob will be prosecuted under California's revenge porn law, because prosecutors must show the victim suffered emotional distress ... almost impossible to do since Chyna "liked" the pics on Instagram.

Probably won't be long now 'til @Jack and co. take him down on Twitter too.

Rob Kardashian's revenge against Blac Chyna -- posting pics of her vagina and breasts -- would seem to violate the revenge porn law ... but that doesn't seem to be the case.

As we reported, Rob believed Chyna was cheating on him and he went on the warpath, not only posting the pics but after they were removed ... he reposted them.

In California there's a 2013 law which states ... "A person who intentionally distributes the image of the intimate body part of another ... knowing they'll cause emotional distress" is guilty of a misdemeanor punishable by up to 6 months in jail.

You would think it's a textbook case of revenge porn, but there's a rub. Chyna "liked" the pics on Instagram, so it's hard to argue she suffered emotional distress.

What's more ... the law says in order to be convicted there must have been an understanding the images would remain private. "Liking" the pics does not seem consistent with keeping the pics private.

And one more thing ... we're told the would-be victim -- Blac Chyna -- would never go to the cops and file a police report.

Rob Kardashian got tipped off that Blac Chyna was allegedly cheating on him by the baby mama of "the other guy."

Sources connected with Rob and Chyna tell TMZ ... Rob got a DM 2 weeks ago from the woman who had a baby with rapper Ferrari. She claimed Ferrari and Chyna had been intimate for 2 months.

Ferrari's baby mama blew the whistle just after Rob reconciled with Chyna. He wasn't sure if the woman was telling the truth, so he began confronting people, starting with Ferrari.

We're told Ferrari denied he was hooking up with Chyna, but Rob persisted and then confronted her. We're told Chyna also denied it.

Fast-forward to the weekend, when Ferrari posted a pic of himself in Chyna's bed ... especially galling because Rob says he paid for the bed. Ferrari was wearing Rob's Versace robe ... which enraged him.

9:18 AM PT -- Rob's photos of a naked Blac Chyna have been taken down for the 2nd time today. He originally posted 3 pics of Chyna naked (2 of 'em allegedly post-op), which were taken down by IG. But he put them up again soon after ... and had them taken down once more.

Rob Kardashian and Blac Chyna are at war ... she's claimed he beat her, he's claiming she's hooking up with a bunch of guys to torture him.

Chyna claims Rob beat her up and then tried intimidating her to stay quiet or else she'd incur the wrath of the Kardashian family.

Just 2 weeks ago it looked like they got back together, but now it's off the hinges. Rob claims his baby mama sent him a pic of her vagina Tuesday -- as if to entice him -- and then hooked up with a rapper named Ferrari.

Our Ferrari sources say he's been open about his fling with Chyna, so it sounds like Rob isn't dreaming this up. What's more ... Ferrari says he's been hooking up with Chyna for several months, which overlaps with the time she reconciled with Rob.

We're told the trigger for the war is all over Chyna and Ferrari.

Rob is now going wild, threatening Chyna that he'll block her from even seeing their child.

Rob Kardashian has traded up on the home front ... no, he's not dating a new chick, he's sold his first home for a modest profit.

Rob bought the 4 bedroom pad in Calabasas' Oaks neighborhood for $2.285 million in February 2016. He put it on the market 11 months later for $2.6 million, right after the birth of his daughter, Dream. It finally sold Wednesday for $2.44 mil, so Rob pocketed a little more than $100k, with the help of Tomer Fridman of Compass Real Estate.

Kendall and Kylie Jenner learned a valuable lesson today -- sometimes it's NOT easier to ask for forgiveness than permission ... because they just apologized for ripping off images of music icons to hawk t-shirts.

Kendall and Kylie just waived the white flag saying ... "These designs were not well thought out and we deeply apologize to anyone that has been upset and/or offended, especially to the families of the artists."

It's pretty incredible. The Jenners slapped images of Notorious B.I.G., Tupac, Ozzy Osbourne, The Doors, Pink Floyd and others ... without ever contacting them or their estates. We say incredible because they themselves have been embroiled in fights where people have tried using their images.

We broke the story ... Biggie's estate fired off a cease and desist letter to the Jenners and Biggie's mom accused them of "exploitation."

Kendall and Kylie have now scrubbed their site of the entire vintage line.

The Notorious B.I.G. estate wasted no time threatening Kendall and Kylie Jenner with a lawsuit if they don't put a stop to selling shirts with the legendary rapper's image.

The estate's lawyer, Julian K. Petty, fired off a cease and desist letter to the J sisters with a deadline of 5 PM Friday to stop pimping the shirts ... or face a lawsuit.

It appears the letter was effective -- hours after Petty sent it ... the Biggie shirt -- along with 2 others featuring Tupac's image -- was no longer available on the website.

The estate's adamant it NEVER gave the Jenners permission, and Petty tells us, "This is misappropriation at its finest. I’m curious to hear the justification. I’m even more curious to hear the proposed resolution."

As we reported ... Biggie's mom, Voletta Walace, said ripping her son's image to sell t-shirts on the girls' website is "disrespectful and exploitation at its worst."

We've reached out to the Jenners, so far no word back.

The Notorious B.I.G.'s mom is PISSED Kendall and Kylie Jenner slapped their portraits over her son's image just to peddle t-shirts.

Biggie's mom, Voletta Wallace, posted a photo of one of Kendall and Kylie's new "Vintage T-Shirts" which launched on their site Wednesday. Voletta ripped the biz move as "disrespectful and exploitation at its worst" -- and not just against her son.

Voletta's also pissed about another shirt that features Kendall's face over a Tupac image.

Kendall and Kylie were selling at least 3 of these type of shirts with Pac and Biggie ... at $125 a pop.

All 3 shirts are no longer available. It's unclear if the gear sold out, or if it's been removed from the site due to the backlash.

Kris Jenner is down with Khloe Kardashian's BF in a big way.

Kris was leaving Craig's in WeHo Tuesday night when our photog asked if she would welcome Tristan Thompson to the family, and she made her feelings clear.

Khloe and Tristan joined Kris Sunday night for Khloe's 33rd birthday party, and from all accounts Khloe and Tristan are on the road to sealing the deal.

BTW ... check out the video from Sunday night ... yet another dinner at Craig's. Kris is 61. Good job!

Kim Kardashian kissed up to Kanye West ... but only because he was standing on a curb.

Kimye went all PDA Monday night while leaving a friend's pad in Los Angeles. Looking stylish, as usual, they decided to give each other a quick peck in front of the cameras.

They've slowly started hanging out in public again over the last month -- doing a bunch of fun stuff like family outings and birthday shindigs. They also did Disneyland.

Khloe Kardashian and Tristan Thompson are calling themselves "Dad + Mom" -- but DON'T FREAK OUT ... they're not preggo!!!

The reality star posted some pics from her surprise 33rd bday party from over the weekend -- including an image of her and TT kissing with the caption, "Dad + Mom."

Khloe has recently talked about having kids with Tristan on "Keeping Up with the Kardashians" -- saying, "He wants to have about five or six kids with me and that’s lovely. We could start at one and we could grow from there."

Kanye West was super pumped after the BET Awards Sunday, holding court outside a WeHo club.

Kanye joined the Kardashian klan to celebrate Khloe's 33rd birthday at the Blind Dragon. Tristan Thompson and Khloe arrived together to the club.

Before joining the group inside, Kanye chatted up one of his friends on the phone, and then met up with some guys on the street.

He was oblivious to the paparazzi ... if anything, they were clowning the photogs.

A good night was had by all.

Kim Kardashian has a little Jackie Kennedy in her -- or at least on her -- because we found out she secretly bid on and won one of the legendary First Lady's super-expensive timepieces.

Auction sources tell us Christie's expected the watch to pull in $120,000 ... but Kim's anonymous, winning bid was $379,500!

Jackie's Cartier watch must have been acquired when she was First Lady -- just months before JFK was assassinated. It's engraved February 23, 1963. She got it as a gift from brother-in-law Prince Stanislaw "Stas" Radziwill.

It's interesting ... Kim has vowed not to be flashy since she was robbed in Paris last October. The watch doesn't stray from her plan ... it has no diamonds and the design is actually understated. We're told she plans to wear it.

Kim also bid on one of Jackie's paintings ... which shows Stas in '63 on a 50-mile hike in Palm Beach.

Kim Kardashian and Kanye West have made a deal with a surrogate to have another child ... TMZ has learned.

As we reported, Kim has a condition -- placenta accreta -- which makes another pregnancy life-threatening. So Kim and Kanye have found a surrogate through an agency and agreed to pay the following:

-- $45,000 in 10, $4,500 monthly installments

-- If there are multiples, the surrogate gets $5k for each additional kid

-- If the surrogate loses reproductive organs, she gets $4,000

Kim and Kanye are also required to deposit $68,850 with the agency.

The surrogate is required to refrain from smoking, drinking and drugs during the pregnancy. She also agrees to restrict sexual activities in the weeks leading up to the pregnancy, including foregoing sexual intercourse for 3 weeks following embryo implantation.

The surrogate cannot go in hot tubs or saunas, cannot handle or change cat litter, apply hair dye, drink more than one caffeinated beverage per day or eat raw fish.

The agreement provides that Kim and Kanye "assume the legal and parental responsibilities for any child ... that may possess any congenital or other abnormalities or defects."

Kim Kardashian opened her home for her KKW Cosmetics launch party, but she shoulda just called the event ... "I'M RICH(er) BEEATCH!!"

Kim's brand new makeup line goes on sale Wednesday ... so she threw a bash in her Bel-Air mansion, complete with Kanye, North, Kris Jenner and a ceiling lined with white flowers.

Pretty extraordinary for Kim to throw a party at home, especially after the Paris robbery -- but then again ... it's not every day you make the kinda dough she's about to make.

Industry experts predict -- probably based on Kylie Jenner's lip kit success -- KKW's opening sales will put about $14 million in Kim's pockets ... in a matter of 5 minutes!

Sorry, Wonder Woman ... shoulda got in the makeup game.

Mason Disick is no fair-weather fan because he's still wearing Tristan Thompson's No. 13 jersey.

Kourtney Kardashian and her 8-year-old tag teamed it Tuesday in Calabasas both looking sporty.

We're guessing Mason's jersey was a gift from Aunt Khloe, who's been dating Thompson since last Summer. His aunt's bf pick clearly came with perks, including seats to Finals games.

Could be worse ... like still rooting for the Lakers during last year's 26-56 season.