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According to reports ... Handler is in talks with CBS for her own show on the network -- but now that David Letterman announced he's retiring, she's gunning for his legendary seat.

Don't worry ... Chelsea's not going all right wing -- she's not stating sexual preference either -- it's made by a company in South Africa that promotes staying in touch with the earth.

There's a bad pattern surfacing in the young life of Austin Mahone.

The singer was rollin' through Miami Friday on a segway with a felonious design ... which now matches a Range Rover that makes Justin Bieber's reflective whip look understated.

BTW .... the segway has speakers.

One day he'll look back and regret this ... we hope.

Austin Mahone left the Hit Factory in Miami after a recording session with Justin Bieber ... and he was driving probably the ugliest car ever.

Range Rover should be able to sue for property damage.

Amanda Bynes got a side benefit from intensive therapy for schizophrenia and bipolar disorder ... a bangin' body.

Sources familiar with Amanda's treatment tell us ... doctors told her daily exercise was an important part of regaining balance and calm, and it's very clear Amanda has been a good patient.

So this week she's been chillin' in Mexico for Spring Break -- doing it up CABO STYLE.

The trip was a present from her parents, who chaperoned her ... meaning no beer, body shots or wet T-shirt contests.

She's on break from her fashion design school, where she's done incredibly well.

Amanda -- who turned 28 Thursday -- clearly learned a thing or 2 in school, 'cause she looks great in a green bikini!

Meet the guy with the worst hotel room in all of Miami ... located just one floor below Justin Bieber and his merry band of hangers-on.

Veni, vidi, Avicii -- the DJ is officially on the mend after undergoing gallbladder surgery last weekend ... hitting Miami Beach Thursday with this GF ... while sporting a brand new bandage under his ribcage.

As we reported, Avicii was forced to bail on his Ultra Music Festival gig last week due to severe abdominal pains, nausea, and a fever. He got his gallbladder removed Saturday and the surgery went well.

Avicii spent a few days in the hospital recovering, but he's since been released.

Maybe the Ultra curse isn't so bad after all.

Leslie Mann went full Robin Thicke on Cameron Diaz last night ... grabbing a handful of booty at the London premiere of their new movie "The Other Woman."

No disrespect to Cameron, but with Kate Upton standing just two feet away ... Leslie made a poor choice.

Bangkok really changed Bruce Jenner -- he returned to L.A. holding hands with his estranged wife today.

Kris Jenner was grinning for cameras as she and Bruce walked out of LAX with a tight grip on each other -- which seems odd for a bunch of reasons ... not the least of which being the fact they separated back in October.

Then again ... they're coming back from a Kardashian family trip to Thailand for their TV show -- so, as always ... hard to tell what's real and what's just for cameras.

Maybe Bruce just talked Thai real well.

Move over Anderson Cooper -- "Grey's Anatomy" star Eric Dane (aka McSteamy) upped his silver fox game to a new level this week in Mexico -- rocking the hair of a man twice his age ... and the body of a man half his age.

41-year-old Dane and his 42-year-old wife Rebecca Gayheart were photographed as a twosome Tuesday -- looking hot in their pool gear -- and Dane's hair is whiter than ever.

It's true ... age really is just a number.

Gerard Butler looks ready to do battle with Xerxes again, flashing his buff bod on Sydney's Bondi Beach yesterday.

THIS ... IS ... Atkins? Jenny Craig? More gym, less lunch?

Simon Cowell and baby mama Lauren Silverman left Nobu in London last night ... with Lauren firmly planted on Simon's lap.

Sitting next to Paula Abdul was never this much fun.

Nikki Reed ditched her wedding ring and tucked her head between her legs Saturday in Los Angeles ... just a day after announcing her divorce.

Reed hit up a yoga studio yesterday in Los Angeles and seemed to be in a pretty somber mood -- makes sense, her and "American Idol" star Paul McDonald just ended their marriage.

The couple says they're still working on an album together ... but they've been living separately for the past 6 months.

Zac Efron was out and about Friday ... 5 days after his bizarre downtown L.A. fight that left him bloodied.

Zac was leaving a grocery store parking lot in the Los Feliz part of L.A. -- looking good. He was smoking a vaporizer and sitting shotgun as a buddy drove.

TMZ broke the story ... Zac and a man who claims to be his "bodyguard" allegedly ran out of gas on a freeway in downtown L.A. at around 12:30 AM Sunday. The "bodyguard" -- a convicted drug dealer -- says they were attacked by transients.

Cops tell us when they arrived on scene, Zac was bloodied.

Britney Spears was rendered invisible yesterday by her MASSIVE bodyguard while she vacationed in Hawaii with her boyfriend, David Lucado, and sons Sean Preston and Jayden James.

Size matters.

Screaming girls were replaced with screaming babies yesterday when the Backstreet Boys arrived in Germany for the latest stop on their tour.

Trading groupies for families ... they want it that way.

"Shahs of Sunset" star Golnesa "GG" Gharachedaghi went out to Mr. Chow in Beverly Hills last night with "Real Housewives of Miami" star Joanna Krupa where they presumably discussed ...