Madonna had her bases covered at Dodger Stadium tonight, although she was careful not to double up.
Spears, clad in black pants, a white tuxedo-style shirt and black heels, shared the spotlight with Madonna on the third song of the night, "Human Nature"—which, incidentally came pretty late in the evening because the show started nearly three hours late.
The delay possibly had to do with Wednesday's lighting and technical difficulties, which halted construction on the Material Girl's set.
"Half of my stage is missing...which is why we're in the dark," Madonna informed the crowd later on.
"The absence of light makes it very hard to look into the audience eyes and that's what makes performing such a joy. So come close. And thank you for your understanding."
Meanwhile, Madge's erstwhile makeout partner skedaddled from the stage long before Timberlake appeared to duet with the belle of the ball on their Hard Candy tune "4 Minutes."
Spears, surrounded by bodyguards, immediately took off following Timberlake's appearance. So much for the face time, but perhaps the two of them breathing the same rarified air is as good as it's going to get for awhile.
Adding to the evening's A-list quotient were audience members Jennifer Lopez, Heidi Klum, Carrie Underwood, Dennis Quaid Hayden Panettiere, Fergie, Kate Moss and Amanda Bynes—but absolutely no sign of Alex Rodriguez.
—Additional reporting by Kristin Dos Santos and Claudia Rosenbaum