Pregnant Leah Jenner bared her baby bump in lingerie in a new photo posted to Instagram on Monday, May 18 -- see it here! Credit: Courtesy Leah Jenner/Instagram

The prettiest pregnancy! Leah Jenner shared a brand-new photo of her growing baby bump via Instagram on Monday, May 18, and the pregnant reality star made sure to add a saucy twist to her latest shot by posing in lace lingerie.

Brandon Jenner's wife, 32, bared her burgeoning tummy in dainty, white boy shorts with laced piping, as well as a matching bra and printed pink bathrobe. The glowing Kardashian-Jenner family in-law posed with her hands above her head as she looked down at her bump in the sun-filled corridor of her home in Calif.

"Soooo... boy or girl?!?!?!" the musician wrote in her latest Pinterest-friendly snapshot. "...or burrito?"

Jenner revealed she and Brandon were expecting their first child together in March, about three years after they tied the knot. "Well, it's time we share the good news," Leah wrote on Instagram, alongside a photo of her husband — the son of Bruce Jenner and Linda Thompsoncradling her bump and giving his wife a kiss on the cheek. "We're having a baby."

Since sharing her news with fans, the expectant beauty has frequently posted updates of her glowing pregnancy. Just one week ago, the beautiful blonde -- also the daughter of Eagles guitarist Don Felder -- shared a photo of herself, clutching her bump in a form-fitting wrap dress on Mother's Day.

"I can't wait to meet this little person," she wrote. "#alreadyfeellikeamama."

I can't wait to meet this little person. #alreadyfeellikeamama

A photo posted by Leah Jenner (@leah_jenner) on May 10, 2015 at 7:19pm PDT

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