It will be the first child for both her and Verlander, an All-Star pitcher for the Houston Astros.
Upton announced the pregnancy on Instagram on Saturday in a post with the hashtag "pregnant in Miami" where she tagged Verlander. Upton shared a stylish snap of herself posing in a fierce red suit on a sunny balcony, with just a hint of a baby bump visible beneath her jacket. She was posting from Sports Illustrated's first-ever open casting at W South Beach. Upton has appeared on the cover of the issue twice, in 2012 and 2013.
Her husband later shared the photo on Instagram, writing, "You're going to be the most incredible Mom!" In it, the Astros' star said in part, "I'm so proud that our little one is going to be raised in this world by a woman like you!"More news: Prince Harry and Meghan Markle spend Princess Diana's birthday at polo
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"#PregnantinMiami." she wrote, tagging Verlander and adding a sunburst and heart emoji.
The couple started dating in early 2014, and became engaged in 2016.