Justin Timberlake and his wife actress Jessica Biel, arrive at the world premiere of Twentieth Century Fox and New Regency's film "Runner Runner" at Planet Hollywood Resort & Casino on Sept. 18, 2013 in Las Vegas.
David Becker—Getty Images
February 1, 2015 8:30 AM EST

Justin Timberlake is going to be a dad.

The “It’s Not a Bad Thing” singer is expecting his first child with his wife, actress Jessica Biel, he confirmed on his birthday Saturday.

“Thank you EVERYONE for the Bday wishes! This year, I’m getting the GREATEST GIFT EVER. CAN’T WAIT,” he captioned an Instagram photo of himself kissing Biel’s pregnant belly in the snow.

“#BoyOrGirl #YouNeverKnow #WeDontEvenKnow #WeAreTakingBets”

Although the couple have kept quiet on pending parenthood, Timberlake did give fans a glimpse at a sweet scene with Biel last fall, sharing a snapshot of the two enjoying a quiet moment on the New Zealand coast.

Timberlake was overseas on his two-year 20/20 Experience world tour, which he brought to a close with two New Year’s shows in Las Vegas.

The musician, 34, and Total Recall star Biel, 32, celebrated their secondwedding anniversary in October, after tying the knot in 2012 during a romantic ceremony in Italy.

In December 2013, the actress told PEOPLE she was looking forward to having a family with Timberlake — but still debating when exactly that would be.

“I’m not sure about sooner or later. But definitely at some point,” she said.

The timing turned out to be perfect: Biel is opening her first family-friendly restaurant, Au Fudge, this year in Santa Monica.

This article originally appeared on People.com

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