Reese Witherspoon is around 12 weeks pregnant, it has been reported.

The Oscar-winning actress sparked rumours she was expecting her third child after showing off what appeared to be a baby bump earlier this month. Although the speculation was denied by Reese's representative, it has now been claimed the 35-year-old is in fact expecting a baby with her husband Jim Toth.

"Reese is right around 12 weeks," a source told Us Weekly. "[She is] not planning to announce it."

Reese already has two children with her ex-husband Ryan Phillippe 12-year-old Ava and Deacon, eight.

If the baby rumours are true, this will be her first child with Jim the Hollywood agent she married in March last year.

The couple have reportedly already shared their happy news with close friends and family.

"Reese and Jim have been trying to get pregnant," a source revealed. "The timing is right. She's so happy!"

Reese has made no secret of her love of motherhood.

She recently revealed she felt sad seeing her kids maturing so quickly and confessed she enjoys being around babies.

"I think it's great to have older children, there is a little bit of sadness that they are growing up and walking away from you," she explained during an interview on a UK TV show last month. "It is nice being a mom to older kids, but I like babies too. They are so stinking cute."