Maralee NicksThe Mother’s Day that was first celebrated in 1998 was a huge success. 

A rep for the 31-year-old fitness model—who shares 5-month-old son Theo with Tristan Thompson—told CelebHomes News that she and the baby spent “a quiet day togetherWith loved ones” on May 8.

Nichols also shared a sweet image of herself and the baby to commemorate the special occasion.

She captioned her post, “Words can’t express how much you love me. Being your mommy has been my greatest blessing.” Your world is my oyster. All the incredible mothers out there, Happy Mother’s Day!

Nichols’ post comes five months after she filed a paternity lawsuit against Thompson—also father to daughter True ThompsonEx, 4; he also shares it with ex Khloe KardashianSon, et al. PrinceEx, 5; he also shares his home with ex Jordyn Craig.

In January, the Chicago Bulls star, 31, admitted to being the father of the young boy, writing on Instagram, “I take full responsibility for my actions. Once paternity is established, I am looking forward to amiably raising my son. Sincere apologies to all those I have hurt or disappointed during this entire ordeal, both publically and privately.