Lindsay Lohan looked very happy to be back to acting again on the set of Ugly Betty on Saturday. Sounds like she's taking the gig very seriously and even showed up 45 minutes early, proving she learned something from her irresponsible Georgia Rule days. On the show, LL will play a bully from Betty's past, which gets us kind of excited since we're all about Lindsay channeling her Mean Girls character. It's a good thing in reality America and Lindsay "really hit it off" since Lindsay will be back to spice things up in a few episodes next season too.