Jennifer Garner daughters Violet Seraphina yellow dress
Jennifer Garner daughters Violet Seraphina yellow dress

Busy third-time-mommy-to-be Jennifer Garner juggled her darling daughters, and a few gifts, as she made her way to a birthday party in Santa Monica Wednesday.

The Arthur actress and her hunky hubby, Ben Affleck, announced they're "thrilled" to be expecting their third child -- and we hear Ben is hoping for a boy.

Big sisters Violet, 5, and Seraphina, 2, are reportedly so happy about the new arrival, they're helping mom decorate the baby's nursery!