Ashton Kutcher On Rumer Willis Concert

Ashton Kutcher may have been separated from Demi Moore, but he hasn't stopped being a supportive stepfather to her three daughters.

 And that was evident on Tuesday night when the Ashton attended a concert at "Hollywood's Sayers Club" put on by the oldest of her brood, 23-year-old Rumer Willis.

 According to People, Kutcher was seen cheering and clapping for his former stepdaughter throughout her four-song set, even snapping pictures on his cell phone. The actor was the only parental figure on-hand for the performance. Moore, who just completed a stint in rehab, was not in attendance; nor was her father Bruce Willis or his wife Emma Hemming.

Kutcher, dressed down in a white T-shirt and flannel button-down with jeans, arrived shortly after midnight with a pal and headed straight for Rumer's table, reports Us Weekly. "[She] seemed happy to see Ashton there, supporting her on her big night," states an eyewitness, who adds that the two chatted on a couch before she headed backstage to prep for her performance. Rumer's set consisted entirely of cover songs, including Ann Peebles's soul staple "I Can't Stand the Rain," "High Low Middle" by indie-pop group My Brightest Diamond, Otis Redding's "(Sittin' On) The Dock of the Bay," and British soul singer Lianne La Havas's "Age." Kutcher was seen even singing along when he knew the words. After the show, he and Rumer shared a "long, emotional" embrace, an onlooker revealed to People. "It seemed really happy and loving — and like the two would be friendly ... no matter what."

Ashton seems like a true gentleman!

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Photos taken from people.com and huffingtonpost.com