Getty Images for Sunday Times Style

If we didn't know better we would have thought it was a pajama party!

Lindsay Lohan and her sister Ali attended the Sunday Times Style Christmas party in London last night, and the actress wore a festive red satin jumpsuit that made it look like she just rolled out of bed! We barely recognized her little sister! From the dark hair to the bangs, she looks totally different than the last time we saw her!

Apparently, the siblings are lending their talents to Duran Duran's new album, and spent some time with the band in the studio just yesterday. "Lindsay was in the studio with the boys from 6:30pm right through to 1am. Lindsay's contribution is more of a spoken word part, while Ali is singing on the track - the sisters will feature on the same song which they thought was really cool. She [Lindsay] has been thinking of giving music another shot recently after recording with Kate Moss' husband Jamie Hince from The Kills, last year," a source dished to The Mirror.

Now that her play is over, she's got nothing but time! It's not like she has any roles lined up on the big screen!