Ashlee Simpson might have new music and a TV show in the works, but it's her big sis Jessica who is making headlines Tuesday morning.

Jessica announced on Instagram that she and her husband Eric Johnson are expecting their third child — a baby girl!

“SURPRISE … ” Simpson wrote. "This little baby girl will make us a family of five. We couldn’t be happier to announce this precious blessing of life."

Simpson and Johnson had a little help announcing their news from their two kids, 6-year-old daughter Maxwell and 5-year-old son Ace. The family has managed to keep the baby news under wraps for weeks now, but finally spilled the beans after having a gender reveal party.

It's certainly happy news, especially now, as Simpson has recently grappled with a slew of mom shamers coming after her parenting style on Instagram. Thankfully, she hasn't let it get her down.

"Listen, it makes him happy and it’s kids being kids," she said about allowing her son to be tossed in a pool with a cast on. "He is in my husband’s hands. I know he’s okay."