Leah Jenner's mother-in-law, Linda Thompson, threw the pregnant star a baby shower on Sunday, May 31. Credit: Courtesy of Linda Thompson

Baby's almost here! Leah Jenner and her husband, Brandon Jenner, are anxiously awaiting the birth of their first child, and on Sunday, May 31, the parents-to-be were celebrated by family and friends with a baby shower in their honor.

"Imagine my joy and gratitude that Brandon and Leah are blessing our family with a baby soon. Leah's mom and I are throwing this delightful baby shower for them," Brandon's mother, Linda Thompson, wrote on Instagram late Sunday when recapping the event she co-hosted with Susan Felder. The non-gender-specific bash reflected "all the warmth and beauty their souls embody," according to Thompson.

Held in the backyard of the couple's Malibu home, the shower's decor included floral arrangements with pink and white roses, a clothesline of baby clothes and onesies, and a stunning cake that invited attendees to "Welcome Baby Jenner."

Leah, 32, clad in a white maxi dress and brown floppy hat, enjoyed her well-deserved R&R at the bash, but also lent a hand with the pre-shower prep. On Saturday, the mom-to-be prepared Sprinkles cupcakes - tied with blue ribbons! - as party favors for her guests, and debated digging into the boxed confections. "Tying bows on party favors while trying to figure out how many I can eat and still have enough left over for guests," she Instagrammed.

A photo posted by Leah Jenner (@leah_jenner) on May 30, 2015 at 4:14pm PDT

As she approaches her due date, Leah can't wait to bring her new baby into the world. "I can't wait to meet this little person. Already feel like a mama," Leah Instagrammed on Mother's Day.

Want stories like these delivered straight to your inbox? Sign up now for the Us Weekly newsletter!