The actresses joined forces to play a few tunes at the launch of Joe Fresh at JC Penney.
Rumer looked stylish in a sleeveless black dress with her dark hair dyed a lighter shade.
Rock DJ: Nikki Reed and Rumer Willis took to the DJ decks at a JC Penney launch event in Beverly Hills on Thursday night `
Paul took centre stage with a guitar while Nikki sat alongside him.
The duo have released several records including All I've Ever Needed which features on The Twilight Saga: Breaking Dawn - Part 2 soundtrack.
Sound system: The daughter of Demi Moore and Bruce Willis seemed to be enjoying providing the party tunes
Husband and wife team: Nikki joined her husband Paul McDonald on stage for a double performance
Rumer meanwhile, was joined by her boyfriend Jayson, who she has been dating since last August.
Along with being an actress, the star is also an aspiring singer, occasionally performing live gigs in her home town of Los Angeles.
Partners in music: Rumer's boyfriend Jayson Blair was on hand to cheer his girlfriend on
Musical couple: Nikki Reed and singer/songwriter Paul McDonald have released several records together
The 33-year-old, who was without her famous boyfriend, posed with Joe Fresh Creative Director Joe Mimran at the event in Beverly Hills.
Glamorous guest: Stacy Keibler arrived in a
glamorous black suit and heels while posing alongside Joe Fresh Creative
Director Joe Mimran