It was a definite highlight in the history of pop music, and last night both Britney Spears and Justin Timberlake made appearances at Madonna's Los Angeles concert.The show began with Spears and Madge collaborating on “Human Nature,” with Britney looking slick in a white frilly top and black trousers as she took the stage, looking happier than ever.Aconcertgoer told press, "This was a completely different Britney from a year ago. She was glowing! It looked like she actually wanted to be on the stage."Later on in the show, Madonna was joined by Justin Timberlake for a dance-infused rendition of “4 Minutes,” a performance that had the crowd (which included celebs like Heidi Klum, Jennifer Lopez, Drew Barrymore, Kate Moss, Ryan Seacrest and Fergie) singing and dancing along.A few days before the gig, there were some technical problems, but that didn’t stop Madge. She told press, "Even though my stage roof was damaged and some lights and effects aren't working, I want to do the show anyway because I don't want to disappoint my fans."
