Ashlee Simpson & Evan Ross Couple Up for Paris Jackson's Birthday!

Ashlee Simpson and Evan Ross relax on a couch together while stepping out to help their friend Paris Jackson celebrate her birthday on Friday night (April 6) at sbe’s Hyde Sunset in West Hollywood, Calif.

Evan is a longtime family friend of the Jacksons.

Other celebs at the party included engaged couple Paris Hilton and Chris Zylka, Austin Brown, and DJ Caroline D’Amore.

Make sure to check out more pics of Paris and her guests ringing in her 20th year of life.

10+ pictures inside from the birthday party…