Angelina Jolie is this year's sexiest female celebrity, according to visitors to Playboy.com.

Scarlett Johansson is next, followed by Jessica Alba.

Hugh Hefner's three "girlfriends," from the reality show, "The Girls Next Door," are in fourth place.

Even though Jolie's in first, Holly Madison, Bridget Marquardt and Kendra Wilkinson will be on the cover of Playboy's March issue. They are, after all, Hefner's ladies.

Other celebs on the sexy list: Jennifer Love Hewitt, Alicia Keys, Cameron Diaz, Beyonce, Christina Aguilera and Britney Spears.

Jolie, meanwhile, is pregnant, a "close source" reportedly told Us Weekly magazine.

The flowing dress that Jolie wore to Sunday's SAG Awards — as well as her curvier body — had stargazers speculating that she might have a bun in the oven.

One SAG attendee told Us Weekly: "It was so obvious she was pregnant. You could clearly see the bump's outline."

Photo Essay: SAG Awards

Us Weekly's source said Jolie may sell the confirmation of her pregnancy, with the money going to charity.

Pitt, 44, and Jolie, 32, have four children: Maddox, 6, Pax, 4, Zahara, 3, and Shiloh, 19 months.

Click here to read more in Us Weekly

Jolie's estranged father, Jon Voight, recently said, "It's wonderful news ... if that's true."

A rep for Jolie did not respond to FOXNews.com's request for comment.

The Associated Press contributed to this report.