Ben Affleck sunglasses plaid shirt jeans Seraphina Jennifer Garner Violet Brentwood pregnnat daughter

Seraphina Affleck is one lucky little girl!

The 3-year-old tot commanded 100% attention from both of her famous parents ... a clean-shaven Ben Affleck and a very pregnant Jennifer Garner.

Any day now, Seraphina will be a big sis to her new sibling. Looks like 6-year-old daughter Violet had better things to do than spend the weekend with mom and dad.

No doubt, they are one of the cutest families in Hollywood!

Click thru to see big sis Violet hitting up a Valentine's Day party.