On Pretty Little Liars, Tammin Sursok (Jenna Marshall) may play one of the Liars’ chief frenemies, but in real life, she’s a part of the PLL family! Yesterday, Tammin welcomed a baby girl into her own family. What did the rest of the Pretty Little Liars have to say about it?

Phoenix Emmanuel Sursok-McEwen was born yesterday at 9 pounds, 12 ounces, and Tammin’s PLL co-stars can’t wait to meet her!

“Ahh congrats @tamminsursok1 can't wait to meet the little one xxxx,” Ashley Benson (Hanna) tweeted at Tammin yesterday, following the big announcement, while Lucy Hale (Aria) sent a big congratulations to the new parents: @tamminsursok1 @SeanMcEwen1 CONGRATS YOU TWO!!! Xx,” Luce tweeted to Tammin and her husband, Sean McEwen.

We wonder if Ash and Lucy already knew the name Tammin and Sean had picked out for their baby-to-be this summer. In June, Tammin tweeted, "Guess what? I know if it's a boy or a girl and I know the name ....got a secret.. Gotta keep it......;)" Is this another secret Tammin had to keep from the Liars, or were they in on Phoenix Emmanuel’s nomenclature? Either way, we love how supportive this cast is!

Catch the Pretty Little Liars Season 4 Halloween special on Tuesday, October 22, 2013 at 8 p.m. ET on ABC Family.