Jamie Lynn Grumet The Breast Mother's Day Ever!

EXCLUSIVE
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TIME covermom Jamie Lynn Grumet put away her breasts for Mother's Day and hit up a park in Beverly Hills with her husband and two sons.

Grumet made headlines last week when she appeared on the cover of the mag with her 3-year-old son ... who, let's say, was enjoying his lunch at the time.

The 26-year-old enjoyed her day at Coldwater Park in Beverly Hills with her husband Brian and her two sons -- coverboy Aram, and her 5-year-old adopted son Samuel.

On her way out of the park, she told a photog she's been shocked by all the attention she's received.