(CNN) Shay Mitchell is now a pretty little mama.

The star of "Pretty Little Liars" and "You" announced the arrival of her first child Sunday on her official Instagram account.

Mitchell posted a photo showing her holding the hand of her newborn.

"Never letting go," the caption read.

The 32-year-old actress and her 38-year-old boyfriend Matte Babel kept the pregnancy under wraps before they made the announcement in June on YouTube.

Read More