Jessica Lowndes picked a great day to turn 22.

The 90210 star is featured on tonight's episode... alongside Joe Jonas! Indeed, Adrianna's rise to fame continues on "Mother Dearest," as she attends a party in Hollywood and chooses a fellow celebrity as her date over Navid. Ouch.

Lowndes, of course, was not meant to be a series regular when she first appeared on season one. But she's grown into a main player on the show and we encourage fans to send in birthday wishes now!

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.