Ashlee Simpson and Pete Wentz: Viva La Karaoke!

They’ve been going strong for awhile now, and Ashlee Simpson and Pete Wentz still know how to have a good time.

They were spotted at OK! Magazine, Crush Management & Hilfiger Denim’s “Viva La Karaoke” last night looking as happy as ever.

Wearing a black skirt and black leather jacket, the “La La” singer looked cozy next to her Fall Out Boy-friend, himself clad in a vest, t-shirt, and distressed denim jeans.

But things aren’t as peachy for Ashlee’s sister, Jessica. Reportedly, she was taken to Cedars-Sinai Medical Center due to a small kidney infection. According to a friend, “She checked in on Friday morning because she was feeling achy and had a fever.”

According to Simpson’s rep, she “has been released and is doing fine."

Gossip Girls

Enjoy the pictures of Ashlee and Pete at "Viva La Karaoke" (March 31).