January 27th, 2011
03:11 PM ET
Rumer Willis isn't the only daughter of Demi Moore and Bruce Willis with showbiz aspirations. Her younger sister Scout recently showed off her vocal chops by recording a song with stepdad Ashton Kutcher.
In the video, which Kutcher posted on YouTube, the actor is seen strumming a guitar while 19-year-old Willis takes the lead on "My Sober," a song they co-wrote together.
Included in the lyrics: "You're my sober when I'm wasted/ You're my courage when I've got a doubt/You're my happy when I'm grumpy/You're my smile when I'm stuck with a pout."
Though 32-year-old Kutcher introduces the song by saying it's about a loved one, a closer listen to the lyrics reveals that it's actually an ode to their ultimate obsession: coffee.
Willis, who attends Brown University, hasn't yet said whether she plans to pursue a full-time career in the entertainment industry. Meanwhile, Rumer, 22, continues to act and model, while their baby sister, Talullah, 16, last appeared in dad's film "The Whole Ten Yards."
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