Paris Hilton And Speidi Show PDA At Perez's Glam B-Day Party!

When you dish celebrity dirt for a living, you're bound to have plenty of famous friends (and enemies) in Tinseltown. And Saturday night, gossip guru Perez Hilton rang in his 31st bday at The Viper Room, surrounded by some his fave boldfacers (including Christina Aguilera, Kim Kardashian, Tara Reid, Amanda Bynes and the Jonas Brothers, who serenaded Perez with that oldie but goodie, "Happy Birthday").

Natch, red carpet regulars Spencer and Heidi were on hand to fete their friend (and milk the photo op), as was fellow Hillzie Doug Reinhardt, who showed up with his main squeeze Paris Hilton.

Happy OMFB, Perez! Now, let's all raise a glass and toast to Mr. Hilton! And, of course, to Dougie and Amanda's awkward/inevitable "Ew, didn't we used to date?!" moment.