Former 16 and Pregnant star Briana DeJesus shared an update on baby No. 2 — and she even dropped a tiny hint about who her baby daddy is!

The Teen Mom 3 alum took to Twitter to share two sonogram photos of her unborn child at just three months ahead of her due date. Even though she seemingly confirmed that she’s having another girl, she’s kept quiet about who the father of her baby could be — until now!

“Baby S,” she captioned the shot of the ultrasounds, suggesting that her baby daddy’s last name could start with the letter “S.”

https://twitter.com/_BrianaDejesus/status/851493635225006080

MORE: Cole DeBoer Teases Expanding His Family With Chelsea Houska

Briana is already a mom to five-year-old daughter Nova — whom she shares with ex-boyfriend Devoin Austin. She went on to star on the first season of MTV’s TM3, but the network gave the series the axe after only one season because ratings were considerably lower than Teen Mom OG and Teen Mom 2 — the more successful iterations of the franchise.

Last month, rumors started swirling that claimed the 22-year-old will be joining fan favorites Chelsea Houska, Leah Messer, Kailyn Lowry, and Jenelle Evans on TM2 for the upcoming season. Although MTV has yet to confirm that Briana would be joining the cast, Jenelle seemingly confirmed it when she revealed her true feelings about the addition.

https://twitter.com/_BrianaDejesus/status/840427412341047296

MORE: Pregnant 'Teen Mom 3' Star Briana DeJesus Debuts Her Baby Bump — See the Pic

“I’m not commenting on it at all,” Jenelle told The Dirty. “MTV wanted me to film about it and I even told them no.

It seems like Briana would be a great addition to the series — not only because she’s currently expecting baby No. 2, but she also has a history of drama with Jenelle! Briana slammed Jenelle’s fiancé David Eason on Twitter after he shared a negative story about Briana’s ex-boyfriend.

"I’m not even gonna dog you because the whole world knows the truth about you. Just stay in your lane and maybe grow up a little bit,” Bri tweeted, then later deleted.

Scroll through the gallery below to see more Teen Mom baby bumps!