Andy Cohen's "Best Birthday Present of All" Is His Son Benjamin Allen Cohen

Sure, Andy Cohen's 50th birthday was fun. He celebrated with a 50th birthday celebration on Watch What Happens Live with Andy Cohen, which included a surprise appearance from John Mayer, taped video messages from Sarah Jessica Parker, Kelly Ripa, Mark Consuelos, and Anderson Cooper, and a phone call from Dolly Parton. But none of these A-list stars compared to the very special guest he spent his 51st birthday with.

That guest, of course, was his son Benjamin Allen Cohen, who will turn 4 months old on June 4. The new dad posted a sweet photo on Instagram of him next to his adorable mini-me on his birthday, writing, "I got the best birthday present of all..."

And while Andy celebrates turning 51, Ben's already reached some pretty big milestones at almost 4 months old. He's traveled via private jet, visited the WWHL Clubhouse, made the cover of PEOPLE, and met Bravolebs and celebs galore.

So what's next for the Cohen boys? We'll have to watch what happens, but in the meantime, check out this incredible video of Andy agonizing over which Vanderpump Rules SURver he'd allow to babysit Ben.

Andy Cohen Reveals Which SURver He Trusts the Most to Watch His Son