It hasn't even been two weeks since she revealed that she was expecting her second child with hubby Hayes MacArthur, and Ali Larter already looks like she's going to pop! Well, not quite yet, but she's definitely well into her second trimester...

The 38-year-old actress is currently on vacation, and on Monday she posted the poolside shot above on Twitter and simply wrote,"Bumpin."

On August 8, Ali appeared on The Tonight Show to promote her new show Legends, and she confirmed that she was expecting baby number two. Before her interview, she posted a pic on Instagram and wrote, "Backstage at @fallontonight I'm going to surprise @jimmyfallon with some big news!"

Larter and MacArthur already have a three-year-old son, Theodore, and the last time Larter appeared on the show, she announced that she was expecting. "Yeah, I came on and I was pregnant and it went so well," she joked with Jimmy Fallon. "So I told my husband I was going on Fallon so I gotta get pregnant!"