Lauren Conrad just revealed her baby's gender on Instagram.

Lauren Conrad has revealed the gender of her baby in a sweet Instagram post.

There were no gender reveal parties/cakes/pinatas for Conrad, instead the 31-year-old posted a photo of a cute vintage card that read: ‘it’s a guy’.

A post shared by Lauren Conrad (@laurenconrad) on Jun 2, 2017 at 9:19am PDT

“I found this adorable birth announcement while helping my Grandma move and I thought it was the perfect way to share that William and I are expecting a baby boy!” she captioned the photo.

The former Hills star announced on New Year’s Day that she’s expecting her first baby with husband William Tell.

She posted a pic of her sonogram on Instagram with the caption: “Happy New Year! I have a feeling 2017 is going to be the best year yet…”

The fashionista told E!News in February that the pregnancy was affecting how she wears clothes.

A post shared by Lauren Conrad (@laurenconrad) on Jan 1, 2017 at 7:57am PST

“I haven’t zipped pants in months!” she said.

Although she was still preferring her heels over platforms, she hadn’t touched her jeans in months.

Conrad hasn’t officially announced her due date, but it’s expected baby Tell will arrive some time in June.

Listen: Childcare, maternal instincts, and gender reveal parties on Hello Bump.