Reese Witherspoon

Reese Witherspoon pregnant with third child

March 21, 2012 at 9:10 AM ET

Gareth Cattermole / Getty Images file
LONDON, ENGLAND - JANUARY 30: Actress Reese Witherspoon attends the "This Means War" UK film premiere at the Odeon Kensington on January 30, 2012 in London, England. (Photo by Gareth Cattermole/Getty Images)

When Reese Witherspoon turns 36 this Thursday, she'll definitely have something extra to celebrate: A baby on the way!

As multiple sources confirm exclusively in the new Us Weekly, out now, the Oscar-winning actress is pregnant with her third child, and her first with second husband Jim Toth, who she wed last March at her $7 million ranch in Ojai, Calif., after over a year of dating.

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"Reese is right around 12 weeks," one source explains, adding that the "This Means War" star is "not planning to announce it."

The baby-to-be will join older siblings Ava, 12, and Deacon, 8, Witherspoon's kids with first husband Ryan Phillippe, from whom she split in 2006 after 7 years of marriage.  Pals of Witherspoon and high-powered CAA agent Toth, 41, aren't shocked by the happy news. "Reese and Jim have been trying to get pregnant," one pal says.

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And now that the A-list couple are breaking the news to a small circle of friends, their baby joy is obvious.

"The timing is right," one source says. "She's so happy!"

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For much more on Witherspoon's pregnancy -- how Ava, Deacon and their dad Ryan Phillippe reacted, how Toth is gearing up for first-time fatherhood and Witherspoon's plan for "time off" -- pick up the new Us Weekly, on stands Friday!

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