The former Lost star sparked speculation she is now a mum-of-two after she was photographed wearing a bikini and showing off a smaller belly on a beach in Kauai, Hawaii on Wednesday (21Oct15), suggesting she is no longer with-child.

A representative for the actress has yet to comment on the birth reports.

Lilly revealed she was expecting in June (15) when she attended the Los Angeles premiere of her film Ant-Man sporting a fuller figure.

At the time, Evangeline explained she was "about seven months" pregnant and she and her boyfriend Norman Kali had no idea whether they were expecting a girl or a boy.

She said, "We don't know this time; we didn't know last time. Last time I had to find out that I had had a son because I'd given birth and I was holding my beautiful baby in my arms, looking at the beautiful, perfect face... and I heard my partner, Norman, say, 'Holy cow, look at the size of the balls on that kid!'"

Lilly and Kali, a former production assistant on Lost, are parents to four-year-old son named Kahekili.