Let's hope she's ready to handle some temper tantrums!

Gossip Girl star Kaylee DeFer is expecting her first child with rocker boyfriend Michael Fitzpatrick, according to Us Weekly.

Kaylee is 26, while her boyfriend  who is the lead singer for rock band Fitz and the Tantrums  is 42.

She admits that the pregnancy took them by surprise.

"We weren't planning on getting pregnant, so right now we're just enjoying being pregnant," she says.

Kaylee adds that "right now" the couple does not have plans to get married.

And what's the gender? 

"We think it's a boy," she adds. "Well, the doctor is 95 percent sure it's a boy." 

She is also looking forward to eating whatever she wants while she's preggers.

"I have had to watch my physique for the last 10 years of my life," Kaylee says. "It's my job, and now I'm just really guilt-free and enjoying being pregnant, sleeping a lot, eating a lot." Sign us up!

Kaylee is known for playing Ivy on Gossip Girl from 2011-2012. She was also in the film Abduction.

She was previously engaged to jewelry designer Mike Pereria before the two called things off in 2012. 

This is also a busy time for her boyfriend, Michael. His band played Coachella last month and released its second album yesterday.

Congrats to the happy couple! Eat away!

Source: Us Weekly