Demi Moore Steps Out Solo at Movie Premiere

By Liz Raftery

10/18/2011 at 10:00 AM EDT

Demi Moore is not letting buzz about a troubled marriage keep her out of the spotlight.

The actress attended the Manhattan premiere of her new movie, Margin Call, on Monday – just days after husband Ashton Kutcher made an appearance at Saturday's star-studded concert to celebrate the William J. Clinton Foundation in Los Angeles.

Moore, 48, posed for photographers and showed off a red patterned Zac Posen dress and Forevermark Diamonds on her way inside the Sunshine Cinema on the Lower East Side.

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After the premiere, she Tweeted to the designer, "Thank you @Zac_Posen for such a beautiful frock for the 'Margin Call' premiere!"

Kutcher, who has recently been spotted with his wife at Yom Kippur services in Los Angeles and around a campfire at Cachuma Lake, Calif., did not attend Monday's event.