How You Know Him:Galloway is a U.S. Army veteran and amputee who graced the cover of Men’s Health magazine in November 2014.

Partner: Sharna Burgess

How You Know Him: A Croatian-born Canadian businessman, Herjavec is best known in the United States for starring on ABC’s Shark Tank.

Partner: Kym Johnson

How You Know Her: The 70-year-old Grammy winner is a legendary R&B singer whose hits include the original “Lady Marmalade” and “New Attitude.”

Partner: Artem Chigvintsev

How You Know Her: The Russian-American gymnast is a four-time all-around U.S. National Champion and has also won nine World Championships medals.

Partner: Derek Hough

How You Know Him: Since 2010, Lynch has played the recurring character of Jeff Sterling on Glee. He is also the cousin of Derek and Julianne Hough.

Partner: Allison Holker

How You Know Her: McKinney is a model who starred in Carl’s Jr.’s infamous naked Super Bowl ad emphasizing "all-natural" ingredients. Her Instagram account has been featured in Esquire.

Partner: Keo Motsepe

How You Know Him: The DJ and rapper is one half of the duo LMFAO, and has also previously been a guest judge on Dancing.

Partner: Emma Slater

How You Know Him: Sam made headlines when he became the first openly gay NFL player after being drafted by the St. Louis Rams. He is currently a free agent.

Partner: Peta Murgatroyd

How You Know Her: Shields plays Primrose Everdeen (the younger sister of Jennifer Lawrence’s Katniss Everdeen) in the Hunger Games movies.

Partner: Mark Ballas

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How You Know Her: Somers’ television credits include starring roles on Three’s Company and Step by Step. She is also a bestselling author, having written a series of self-help and diet books.

Partner: Tony Dovolani

How You Know Her: The oldest daughter of Bruce Willis and Demi Moore played Gia Mannetti on 90210 and has also had guest-starring roles on shows including Hawaii Five-0 and Pretty Little Liars.

Partner: Valentin Chmerkovskiy