Keibler also shared the news on Instagram, writing: "Look what we've got cooking! A Bun'dle of love!"
The parents-to-be were married on March 8 on a beach in Punta Mita, Mexico. "I'm so excited for the new chapter in my life," she gushed. "I'm so ready for it. I feel for the first time like I'm really fulfilled and at peace."