He's finally back! One of SNL's most beloved stars returns to celebrate with girlfriend Paige Butcher
Stefon is in the house!
A pregnancy won't stop the yoga enthusiast from supporting her man on the red carpet.
The Hollywood couple (and new parents) glow while visiting Studio 8 in Rockeller Center.
It's date night on Sunday night for the Hollywood A-listers.
No Scandal here! The actress simply glows in her Adam Lippes dress.
What better date to bring to this anniversary than your own mother? Good move, Bradley!
After making a splash as host for SNL, the "Shake It Off" singer couldn't pass on attending the big celebration. Plus, she looks super cute in an Azzaro dress, Jimmy Coo shoes and Lorraine Schwartz jewelry.
Shall we bow down for one of SNL's greatest comedians to ever step foot in Studio 8? By the way, nice BCBGMAXAZRIA dress, girl!
Way to make an entrance! The actor works some bright purple shoes before enjoying the anniversary.
After hosting the NBC series three times, the Bridesmaid star couldn't turn down the chance to attend the big party.
Talk about a dynamic duo! The late-night host and lead singer of 'N Sync step onto the red carpet before delivering a hilarious opening monologue.
The genius mind behind Nancy Grace, Kathie Lee Gifford and Target Lady returns to Saturday Night Live, sporting a Max Azria Atelier gown.
One of our most beloved "Weekend Update" anchors returns wearing a little black dress.
You betcha the famous politican is in attendance for the big anniversary.
The man behind President Barack Obama and Prince gets ready to serve up more LOL moments.
You didn't think the outspoken host of The View would miss this show, right?
The Avatar star gives a giant thumbs up before participating in the celebrations.
One way or another, the "Call Me" singer knew she had to make it to the Big Apple for such a milestone moment.
Best Valentine's Day present ever? The actor scores a plus one for his wife!
How can you not be reminded of the Cow Bell sketch when seeing this funny guy?!
Fred Armisen's rumored girlfriend stuns in a revealing dress.
NEXT GALLERY: More Saturday Night Live Alumni We Miss