"We can't hold this magical little secret in anymore!! Baby Leopold will be joining us in September!" Tenley, 35, captioned the slideshow, which featured Tenley looking gorgeous in a long, white dress as well as a strip of ultrasound photos.
"We've already been having a ton of fun with our little sidekick joining us on memorable worldwide adventures, and now keeping us hopeful in 'Quarantine life.'"
Tenley continued by writing, "We pray that this special bit of news brings a little bit of joy & hope during a time of chaos and uncertainty our world is facing right now. And to any longing, & hopeful hearts, our hearts are with you, and prayers are for you. God's plans are always greater than we can ever imagine! Ephesians 3:20."
As for Taylor, he wrote on his own Instagram account that he's "super excited to bring a quarentennial into this world!!"
"Baby Leopold coming in hot!!!" he gushed. "Beyond excited to enter this stage of life with the most wonderful person @tenleymolzahn. I too have been growing, I'm up 6 lbs 10 oz."
Taylor later revealed on Instagram Stories she and her husband were celebrating the baby with some takeout from In-n-Out Burger. The couple is quarantining themselves in light of the ongoing coronavirus pandemic.
"You've got to get that dad bod, right babe?!" Tenley joked in a video, before adding, "Overwhelmed with gratitude with all of your love, sweet, kind, and encouraging comments, and all of your support! Thank you!"
Tenley and Taylor got engaged in January 2018 after two years of dating and wasted no time tying the knot. They enjoyed a wedding ceremony in April 2018 right outside of San Diego, CA.
Tenley met the love of her life through a mutual friend who attended the same church as Taylor.
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After dating the product-line manager for a sandal company for only three weeks, Tenley gushed about how she was "going to marry him."
Tenley revealed she was dating a new guy -- and that she was "crazy" about him -- in early February 2016.
Tenley told Us Weekly of her "gorgeous" Taylor at the time, "His smile is just contagious. He's amazing, his heart is what got me. I had the best first date of my life with him and in that minute of just meeting him, I knew there was something really special about him."
Taylor was apparently unaware of Tenley's reality TV past when they began dating, which she saw as a big bonus.
"I think it's strange for him. He didn't know me from The Bachelor, which is really really cool," Tenley told Us at the time, adding that her man had no interest in watching old episodes of the ABC reality dating series.
After competing onBachelor Pad's first season and experiencing traumatic heartbreak from her 2014 split with longtime boyfriend Kiptyn Locke, Tenley decided to put herself out there again and join the second-season cast of Bachelor in Paradise.
The city girl fell in love with former The Bachelorette suitor Joshua Albers in Paradise; however, she didn't think she could make a long-distance relationship work with him. Due to their different lifestyles, Tenley called it quits with the Idaho welder on the last day of filming.
"I'm not ashamed of anything I've ever done. I'm proud of myself and what I've learned and gained from it," Tenley previously told the magazine.