Robin Tunney has welcomed her first child, E! News has learned.

The Mentalist actress shared the very first shot of her son on Instagram along with a sweet message about why she chose to keep a low profile while pregnant.

"My greatest work, Oscar Holly Marmet. Picture by my friend @shannonleeimages. Sorry I didn't talk about being pregnant. Wanted to keep it all for myself. #momlife #bestbaby #soinlove."

According to Shannon Lee, little Oscar was born a little under two weeks ago.