Ashton Kutcher  spent a sweet Mother's Day  with mom-to-be Mila Kunis  on Sunday, when the couple hit up a baseball game at Dodger Stadium. The two were dressed casually, with Mila sporting an "I Love Sundays" top and Ashton looking relaxed in a sweatshirt and sneakers. Last week, Mila went public for the first time about her pregnancy and engagement news, saying that she and Ashton are surprised that no one found out about their big announcements sooner. "We were able to keep [our engagement] private for two months," Mila said when she appeared on The Ellen DeGeneres Show  on Friday. "I think everybody assumed we've been engaged for so long that I was wearing the ring in public for two months and nobody ever commented on a single photograph. Like, they just decided not to acknowledge it for two months. It was amazing."