Rumer Willis celebrated her pregnancy in gorgeous fashion! The daughter of Bruce Willis and Demi Moore, who is expecting her first child with boyfriend Derek Richard Thomas, held a baby shower last month in Los Angeles. A close source tells ET that «the vibe was incredibly warm and fun at Rumer’s baby shower, which was held in mid-March. They were surrounded by family and close friends.» The party's photographer, Kelly Balch, posted photos from the event on Instagram Tuesday, writing, «One of my favorite family’s growing; congrats to @rumerwillis and @derekrichardthomas on their beautiful soul joining this world!» Rumer was a vision in a white dress at the event, posing for photos with her boyfriend, family and friends. The star-studded guest list included Rumer's mom, Demi, stepmother, Emma Heming, and her sisters, Tallulah, Scout, Evelyn and Mabel.