Britney joins Madonna on stage, Justin Timberlake comes on later

Britney Spears joined Madonna on stage at Dodger Stadium in LA last night. Wearing a white ruffled dress shirt and loose black pants, Britney was conservatively dressed in comparison to the material girl in her trademark bra and panty combo. Britney came on to sing for Madonna's third song, Human Nature. It looked pretty tame and chances are high that Madonna tried to get Britney to kiss her again and was denied.

There were rumors ahead of the show that Justin Timberlake would join Britney on stage for a reunion of sorts, but it was not to be. Timberlake did come out to sing '4 Minutes' with Madonna an hour after Britney's cameo. She was said to have been grinding up on him, which you can see on YouTube. It's not quite as scandalous as it sounds, especially for Madonna.

OK! reported that Presidential Elect Barack Obama might show up, but that seemed like a desperate measure by Madonna's people to increase interest in the show, which did not sell out despite all the advance publicity over a possible Britney Justin reunion.

Other celebrities and big names did come out to be entertained by the 50 year-old pop star. According to OK! Magazine, Heidi Klum, Jennifer Lopez, Drew Barrymore, Kate Moss, Ryan Seacrest, Fergie, Lucy Liu and Elizabeth Banks were in the audience. I bet Seacrest got comped after hyping the show on air so much. Madonna's rumored new boyfriend, Alex Rodriguez, was also in attendance.

Here are photos from last night, thanks to WENN.