While waiting for Hayden Christensen to leave The Tonight Show, photogs caught a glimpse of Ms. Christina Aguilera going in!

She's already made a public in-store appearance (her first since giving birth), is she gearing up for a performance as well?

Oh, yeah, and paps also caught Jumper's Hayden Christensen, who almost sorta kinda barely broke a smile while he posed for pix with fans outside the studio.