Katherine Elizabeth Upton is an American model and actress. Upton was born in St. Joseph, Michigan. She is the daughter of Shelley (née Davis), a former Texas state tennis champion, and Jeff Upton, a high school athletics director.

Upton attended a casting call in Miami for Elite Model Management in 2008 and was signed the same day. She eventually moved to New York City, where she then signed with IMG Models.

She appeared in Sports Illustrated's Swimsuit Issue in 2011—for which she was named "Rookie of the Year"—and on the cover of Sports Illustrated's Swimsuit Issue the following year. Additionally, in July 2012, she posed for the cover of GQ magazine. In the GQ photo, Upton is sporting a skimpy, red, white and blue bikini, and seductively eating a popsicle.

Upton also made headlines in 2012, when a video surfaced of her provocatively dancing to the Rej3ctz's song, "Cat Daddy." Following the video's internet explosion, it was removed from YouTube—it was deemed too sexual by regulators of the site—but was replaced on the site soon after. Days later, Upton appeared as a guest on Late Night with Jimmy Fallon, where she showed guests some of her dance moves from the popular video.

Upton started dating then Detroit Tigers baseball player Justin Verlander in early 2014, and they were engaged in 2016. Also in 2014, nude photographs of Upton and several other female celebrities were illegally leaked to the Internet. In November, 2017, the couple married in Tuscany, Italy. In July 2018, Upton announced her pregnancy.