Jessica Simpson got her birthday celebratin’ started early this year … even tho she doesn’t turn 28 until Thursday, she and boyfriend Tony Romo got the party started last night. Jessimo made their way around the LA area last night, winding things up at Key Club where Tony took to the stage to sing with the metal cover band Steel Panther (the band formerly known as Metal Skool) and serenaded Jessica with their rendition of the Guns ‘N Roses classic song Sweet Child ‘O Mine … here are a few pics from inside Key Club last night:

Jessica Simpson isn’t avoiding her 28th birthday on Thursday – she’s already started celebrating. The singer – joined by close friends and family – indulged in her favorite cupcake flavor, red velvet, from Crumbs bakery. For dinner, Jessica and on-again beau Tony Romo went to Sagebrush Cantina in Calabasas, where they met up with her pregnant sister Ashlee and husband Pete Wentz. At one point, Ashlee and Jessica got on stage to sing with The Copycats, a cover band that was playing. The band serenaded Jessica with “Happy Birthday.” Following dinner, Jessica and Romo hit Key Club in West Hollywood to see Steel Panther (formerly known as Metal Skool). The Dallas Cowboys quarterback even tried his hand at singing the Guns n’ Roses hit “Sweet Child O’ Mine” to Jessica and the crowd.

Actress Vivica A. Fox, Rage Against the Machine singer Tom Morello and Hancock director Peter Berg were all also in the Key Club audience last night for Tony’s performance. It really sounds like things are back on track and in full swing for Jessimo. It takes a lot for a guy to get up on stage and embarrass himself in front of a bunch of people with crappy singing just to impress a girl (twice — he sang to her at Key Club back in January, too) … I guess it must be love … lucky for Papa Joe Simpson ;)

[Photo credit: Jason Fisher; Source]