Hugh Jackman ... Ayyyyyyyyyy!

Here's a 48-year-old Hugh Jackman flashing a thumbs-up in a biker-inspired black jacket and a pair of upsetting sideburns over the weekend (left) ... and Henry Winkler posing as his iconic jukebox-punching "Happy Days" character, Arthur 'Fonzie' Fonzarelli, back in the '70s (right).

Both of these looks have jumped the shark.

We're just sayin'.

Keanu Reeves Just Felt Like Running: We're Just Sayin'!

Here's a slightly gristled Keanu Reeves in a run-over red cap walking through the airport in France yesterday (left) and Tom Hanks as Forrest Gump mid-stride during his cross country running expedition in the 1994 classic film (right).

#speed

We're just sayin'.

Kesha Da Ya Think I'm Sexy? (We're Just Sayin')

Here's 29-year-old pop singer Kesha flaunting a feathered out '70s shag hairstyle with bonus blunt bangs while at a Hollywood gala last weekend (left) and international rock god Rod Stewart owning his signature shag while performing at Madison Square Garden back in 1977 (right).

There's lots of layers to this look.

We're just sayin'.

Paris Takes a Peace Out of Miley's Style We're Just Sayin'!

Here's Michael Jackson's daughter Paris Jackson flashing a peace sign in her blinding blonde 'do on social media recently (left) and Billy Ray Cyrus' daughter Miley Cyrus with her signature tongue wag and carbon copy pose back in 2013 (right).

Ay papi!

We're just sayin'...

Rita Ora Are You Fir Real?!

Rita Ora's fashion is something to pine after.

Here's a noble looking Rita Ora (25) leaving a club in London Tuesday night (left) ... and an abandoned Christmas tree left curbside in London after the holiday season (right).

Thy leaves are so unchanging!

We're just sayin'.

Vanessa Hudgens vs. Jessica Alba MAD FASHION TREND?!

Here's Vanessa Hudgens (26) cruising with her matte black mane and sable sombrero alongside Jessica Alba (34) rocking her angelic ombre locks and snow white chapeau -- and below them is their MAD Magazine inspiration ... "Spy vs. Spy."

Yin Yang twins? We're just sayin'.

Justin Bieber & Tilda Swinton White Hot Hair Twins We're Just Sayin'!

There's more than 30 years between them ... but Justin Bieber's newest hairdo has him looking suspiciously similar to Tilda Swinton.

Come to think of it -- has anyone ever seen the two in the same place? Could the Biebs be Tilda's greatest acting role ever?

We're just sayin'...

JOHN TRAVOLTA'S NEW LOOK WILL GIVE YOU THE WILLYS

Here's the 60-year-old John Travolta showing off his freshly sprouted mane and matching chin gristle at a movie premiere earlier this week (left) and a magnetic looking makeover on the classic kids toy The Original Wooly Willy (right).

Both are attractive looks.

We're just sayin'.

Leonardo DiCaprio Heeeeeere's Jack!

Leonardo DiCaprio can't handle the truth ... he's really starting to look like Jack Nicholson.

The 39-year-old actor resurfaced in Malibu with girlfriend Toni Garrn Sunday ... bearing a striking resemblance to his co-star from "The Departed."

All work and no play makes Leo a dull boy.

Tom Cruise & John Travolta Face/Off

Here's Tom Cruise (left) seen out to dinner in London where he's promoting his new movie, "Edge of Tomorrow" ... and John Travolta (right) leaving a party last summer.

Even Adele Dazeem couldn't tell them apart.

Reese Witherspoon Is Only Available on Netflix

Here's "Legally Blonde" lawyer Reese Witherspoon doing serious time in a safety-cone-orange outfit at a benefit in L.A. this week -- and Taylor Schilling's character Piper in her signature state issued scrubs from "Orange is the New Black."

Only one of them was actually arrested in the last year.

We're just sayin' ...

'Eastbound & Down' Marilyn Manson Looks Strangely Normal In TV Cameo Role

Go ahead ... take a good look.

That's Marilyn Manson -- AKA Brian Hugh Warner -- getting all actor-y on the set of the TV show, "Eastbound & Down" ... where he's shooting a cameo role this week. This is his intense look.

Manson is a huge fan of "EB&D" ... and has reportedly been lobbying the producers for the last couple of years to cast him in the show ... and it finally paid off. But he must have seriously confused the makeup people on the set ... since he arrived looking, well ... pretty dang normal.

This is the HBO comedy's 4th and final season. No word on when Manson's episode will air.

But he's ready for his closeup.

Jack Osbourne's Baby Princess Of F**king Darkness

Here's Jack Osbourne's baby daughter Pearl on the left ... and the kid's grandfather on the right.

Neither one of them can form a complete sentence.

We're just sayin' ...

Kanye West SPACEBALLIN'

Kanye West went full "Spaceballs" in Paris today ... sporting an outfit that was an obvious homage to the evil and maniacal Dark Helmet.

Let's face it ... the villain (we mean DH) has a lot in common with the rapper.

Mr. Helmet prefers to be called Lord ... Kanye goes by Yeezus -- and, of course, they both share a fondness for crushing anyone who crosses and/or talks to them.

Just sayin' ...

Anyway ... "May the Schwartz be with you."

PAUL MICHAEL GLASER AND ROBIN WILLIAMS Livin' the Scruff Life!

Here's 70-year-old "Starsky and Hutch" actor Paul Michael Glaser donning a silver beard and shut-in inspired swag in London this week (left) -- while 62-year-old "Mork and Mindy" actor Robin Williams was photographed in New York City with the same fuzzy look back in 2011 (right).

Nanu-nanu!

We're just sayin'.