The whispers have surrounded Reese Witherspoon since she married Jim Toth in March. When will the Oscar-winning mother of two expand her family?

MAYBE soon, according to a DARING proclamation by OK!

“It is no secret that Reese wants to have children with Jim,” says an insider. “They have already been trying for some time now. They are already a wonderful family - the only thing missing is a new baby.”

The new baby rumors began, the tabloid says, when Reese, known as being one of Hollywood’s fittest actresses, began looking "softer" than usual.

Over the Fourth of July weekend, the Water For Elephants star wore a shirt over her bikini during a family outing in Malibu, giving rise to gossip.

An insider dishes a jaw-dropping tidbit: “Reese may be pregnant. Her stomach isn’t washboard flat and people have noticed. She’s relaxed her exercise routine. Reese typically hits the pavement for a long run every morning.”

So, unlike Jennifer Aniston, who is definitely pregnant or adopting about once a month ... Reese might be carrying Jim Toth's baby right now.