The actress looked beautiful in a hot pink summer dress that showed off her new curves to maximum effect.
Reese, 36, was pictured leaving church with Eva, 12, and eight-year-old Deacon – her children from her marriage to Ryan Philippe.
There was no sign, however, of her husband of one year, Hollywood agent Jim Toth.
Sources say the couple are past the 12 week mark with their pregnancy, but have no plans to officially announce the good news.
Radiant Reese wasn't the only star looking blooming lovely this Easter. American Pie actress Alyson Hannigan and TV star Kourtney Kardashian were both showing off baby bumps over the weekend.