Following rumors that Lindsay Lohan is seriously being courted to do an adult film because she's so strapped for cash, she's basically going all over Los Angeles trying to get as much attention as she possibly can. What's the ultimate test to determine if someone is an out-of-control attention whore? When they crash someone else's concert. British singer Lily Allen was performing in L.A. and while singing Britney Spears' Womanizer for an encore, Lindsay took to the stage uninvited to join in. Allen handles the situation pretty well - skip to the 3:25 mark for Lindsay's appearance.

Here's some photos of Lily Allen from another performance, since Lohan looks like crap now and no one wants to see her photographs anymore.