Is Angelina Jolie's pregnancy the new worst-kept secret in Hollywood?

After reports began to emerge before the Screen Actors Guild awards claiming Jolie was pregnant -- some claiming with twins -- OK! magazine says Jolie is indeed expecting. Citing a source close to Jolie, OK! reports Jolie is "the type that doesn't want to scream it to everyone, but she has the quiet, expectant mother glow."

With the pregnancy rumors already swirling prior to the SAG awards, Jolie's loose-fitting dress and her penchant for water that night left many speculating that she was with baby.

"Angie has wanted a second biological baby for some time now," the OK! source said.

Star magazine reported on Jan. 24 that Jolie was pregnant with twins.

Jolie and boyfriend Brad Pitt have one biological child together, Shiloh Jolie-Pitt, who was born in May of 2006. The couple also parent three adopted children, Pax Thien, Zahara and Maddox.