Is Reese Witherspoon expecting baby no.4?

Amy Stevenson

After stripping off for a sizzling swimsuit photoshoot last week, Reese Witherspoon has sparked rumours she's expecting bub number four!

Wearing a sexy black one-piece during the shoot, the 41-year-old actress looked to show off a slightly more rounded stomach than we're used to seeing and now insiders claim Reese is ready to debut her "baby bump".

Reese shows off her

"She wouldn't be happier. Reese says that when the babe arrives, her family will be complete," a source reportedly close to the actress and her husband Jim Toth tell Woman's Day.

"Reese is walking around with a permanent smile on her face and Jim's like the cat that got the cream since they heard their baby news. And the kids are thrilled too."

Is it a baby bump? Source: Mega

Reese is already proud mum to 17-year-old daughter Ava and 13-year-old son Deacon, whom she shares with ex-husband Ryan Phillippe.

After spiltting from Ryan in 2007, the Big Little Lies star went on to marry Jim in 2011, with the couple welcoming son Tennessee in 2012.

Could the actress be expanding her brood?! Source: Getty

So could Reese be expecting!? The insider adds to Woman's Day that the actress seemingly gave away a clue that she was broody while recently discussing her role as star and producer on the hit HBO series Big Little Lies.

GALLERY: Reese Witherspoon sizzles in swimwear shoot
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The actress sizzled in the shoot. Source: Mega
Reese has been seen out with a growing

"I did a movie every time every time I was pregnant, and I wish I hadn't. I just wish I'd just let myself be pregnant," Reese recently revealed.

The mag adds another big clue Reese could be expecting is her reluctance to take on new roles after wrapping on Big Little Lies and two movies.

Time will tell if we hear the pitter-patter of little feet!

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