News Evangeline Lilly Rocks a Bikini Shortly After Giving Birth By Emily Krauser 7:01 AM PDT, October 24, 2015 Now Playing hh:mm:ss Hey, hot mama!Evangeline Lilly had a fun day in the sun in her adopted state of Hawaii on Thursday, rocking a bikini and enjoying a mellow afternoon with a few friends at a beach park in Kauai.PHOTOS: 12 Celebrity Baby Bumps to Keep an Eye OnThe fact that the 36-year-old actress was out in a swimsuit wouldn’t be surprising if it hadn’t revealed one very important piece of information: She’s already had her baby!While she hasn’t officially announced the good news, the newborn was out enjoying the day with his mom, who looked amazing in the printed purple two-piece.Splash NewsLilly first debuted a sizable baby bump in June when she walked the red carpet for her film, Ant-Man.“I’m great -- I’m knocked up!” she cheekily said to ET at the premiere. “I love being pregnant.”She also told ET that she was keeping the gender a surprise, but she did more than that by staying mum on her little one's birth as well.WATCH: Marvel Announces ‘Ant-Man’ SequelIn January, Lilly told Ocean Drivemagazine that her goal is to have a big family, and she’s definitely off to a good start!The bundle of joy is the actress’ second child with longtime boyfriend Norman Kali. The two are already parents to 4-year-old son Kahekili.Watch Lilly gush about her pregnancy even more in the video below.Evangeline Lilly Explains Why She Wants to Keep the Gender of Baby No. 2 a Secret! Related GalleryHollywood's Hottest Bikini Bods!