10/18/2011 at 08:00 AM EDT
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.
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.