Jessica Simpson Celebrates with Tony Romo

Despite her dwindling relevance, Jessica Simpson isn't avoiding her 28th birthday on Thursday - she's already started celebrating.

The "singer" and "actress" joined by close friends and family - indulged in her favorite cupcake flavor, red velvet, from Crumbs bakery.

For dinner, Jessica and Tony Romo went to Sagebrush Cantina in Calabasas, Calif., where they met up with Ashlee Simpson and Pete Wentz.

At one point, Ashlee and Jessica got on stage to "sing" with The Copycats, a cover band. The band serenaded Jessica for some reason.

Tony Romo and Jessica Simpson sort of broke up, but are now going strong!

Following dinner, Jessica Simpson and Tony Romo hit Key Club in West Hollywood to see Steel Panther (the artists 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. Woo.