Jennifer Garner had a smiley afternoon with Violet and Seraphina at the Brentwood Country Mart yesterday. She treated her daughters to a ride on the merry-go-round and swung Seraphina in her arms during the sweet play date. That morning, Jennifer took care of the school run with Violet and met a friend for coffee in LA. The busy mom has been all about her girls, but it was Jennifer who was the center of attention over the weekend. She celebrated Mother's Day with her family and friends at a party at pal Tobey Maguire's house. Ben Affleck joined her for the event after also helping Jennifer ring in her 39th birthday with a BBQ last month.