Did 90210's AnnaLynne McCord Skip Charity Event for Vegas Bash?

Did the 90210 starlet skip a Habitat for Humanity event to attend Twilight's Kellan Lutz's birthday bash in Vegas? Get the deets!

Did 90210 starlet AnnaLynne McCord cancel on a charity event this weekend to party in Vegas instead?

That's what it sounded like, according to castmate Adam Gregory, who was volunteering at Habitat for Humanity on Saturday along with costars Shenae Grimes, Jessica Stroup and Dustin Milligan.

"AnnaLynne isn't here because she isn't feeling well," Adam told E! News of her absence.

Funny, because she was feeling well enough to party in Vegas, where she attended Twilight star (and boyfriend) Kellan Lutz's birthday party...

AnnaLynne, along with Brittany Snow, joined the party at Privé in Planet Hollywood's Hotel and Casino.

The group downed bottles of Dom Perignon champage and danced on their VIP tables until early Sunday morning.

But her rep insists she was never supposed to attend the Habitat for Humanity event.

"AnnaLynne was never scheduled to be in L.A. this weekend," he said. "She will, however, be going to New Orleans in the next two weeks with the Bernard Project rebuilding houses in the Lower 9th ward."

Good for her!