Kunis, 31, welcomed daughter Wyatt Isabelle with actor fiance Ashton Kutcher on October 1, reported E! Online.
The actress looked stunning in a strapless black Dolce & Gabbana dress with a corset bodice and full skirt at the Los Angeles premiere of her new sci-fi-action film, 'Jupiter Ascending'.
The movie, also starring Channing Tatum and Eddie Redmayne, finally hits theaters this Friday after being delayed for months.