Actress Alanna Masterson to be a first-time mother

The Walking Dead actress Alanna Masterson is pregnant with her first child.

The 27 year old and her photographer boyfriend Brick Stowell are preparing to welcome a little one to their family, and she shared the exciting news on Instagram.com on Monday (27Jul15).

Masterson, who is the younger half-sister of actors Danny and Christopher Masterson, posted a photo of herself cradling her growing baby bump along with the caption, "Guess what..."