When did Gary Busey get so out of shape?!

We spotted Gary and girlfriend Steffanie Sampson getting brunch with their son Luke on Sunday, and the 67-year-old actor's gut looks bigger than Kourtney Kardashian's growing baby bump! A few dietary changes and some time on the treadmill would definitely benefit him, so hopefully he gets on it!

All sorts of celebs are weighing in on The Donald as of late ... and they have some not-so-nice things to say about The Apprentice host and potential presidential candidate.

Comedian Bill Cosby spoke to NBC about Trump's possible 2012 campaign.

"He’s full of it,” Cosby said. “You run, or shut up … but the only thing he's running is his mouth."

And Robert De Niro said Trump is like a "used car salesman" when it comes to the businessman's questioning of President Obama’s birth certificate.

Last, Jerry Seinfeld pulled out of an event benefiting St. Jude Children’s Research Hospital because Trump’s son, Eric, was hosting it.

But Trump, who's used to being the one giving the criticism a la his Apprentice franchise, doesn't take such critiques lightly.

See what fightin' words he had in response to these three -- and the bizarre statement that one celebrity gave in support of Donald -- after the jump!

Bardot isn't really all that new of a hotspot - it used to be called Spider Club back in the day! Now the VIP hideaway above Avalon is a magnet for lots of A-list stars like, uh... Mischa Barton.

Above is DJ AM, rockin' a Milli Vanilli t-shirt, and Jonah Hill leaving the club in Hollywood last night. And who else did we spot out and about yesterday?

Why Gary Busey (lookin' SO totally together here!) and the stars of Nip/Tuck!

Click the pic for more X17 leftovers!

Gary Busey must be the biggest fan of Cirque Du Soleil on the planet - after all, we can't think of any other reason why he would have stepped out in public in that ridiculous shirt!