Hilary returning to Gossip Girl?

It looks like Hilary Duff might be reprising her role as Olivia Burke on Gossip Girl.

Buzz Focus is reporting that Hilary will be coming back for the Season 4 finale.

Perez Hilton also wrote an article about Hilary's return, and implied that she might be making an appearance next season too (probably pure speculation).

This might make me a bad Hilary fan, but I've never seen Gossip Girl. I was going to try to find Hilary's episodes on DVD but I never got around to it. Even though I don't watch, it's cool to see Hilary returning to a popular show.

UPDATE: April 13, 2011:

Several sources including Perez Hilton are reporting that Hilary Duff will NOT be returning to Gossip Girl. It looks like the original story was just a rumor.