Sitting side-by-side, the Hollywood spouses took donations via phone to help raise money for kids fighting poverty during the two-hour live broadcast.
"Ashton and Mila took a quick, cute selfie together before the show started taping," an onlooker tells Us. The insider adds that the pair spent most of their time laughing with each other and talking with The Big Bang Theory actor Johnny Galecki.
Kutcher, 38, and Kunis, 32, didn't mind getting silly either. The parents of daughter Wyatt, 19 months, took another selfie before hitting the stage. "Rocking the phones for #rednoseday 9/8 central on NBC @rednosedayusa," Kutcher captioned the Instagram photo.
Red Nose Day is a long-running U.K. tradition that was launched in the States last year. On Thursday, NBC's second annual telecast raised more than $30 million for the cause.
Other stars who helped to give back included Minnie Driver, Jane Lynch, Mandy Moore, Craig Ferguson, Tony Hale, Milo Ventimiglia, Scott Foley, Malin Akerman, Yvette Nicole Brown, Ben Feldman and Sterling K. Brown.
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