Kelsey Asbille Chow (born September 9, 1991) is an American actress. In 2008, she guest starred on The Suite Life of Zack and Cody. She also co-starred in the Disney Channel original film Den Brother. She is known for her role as Mikayla in the Disney XD sitcom Pair of Kings, and as Monica Dutton in the TV Series Yellowstone. From 2005 to 2009, she had a recurring role as Gigi Silveri on the drama One Tree Hill. She portrayed Tracy Stewart in MTV's Teen Wolf from 2015–2016. For all of her screen credits up through 2017, she is listed as Kelsey Chow. For most of her roles since that year, such as for Wind River, Yellowstone, and Fargo, she is credited as Kelsey Asbille. Her parents are Dr. James Chow and Jean Chow. She has two younger siblings: a brother, Forrest, and a sister, Kiersten. Chow has said her father is Chinese, and her mother an American from Columbia, South Carolina. Chow has been dating British actor William Moseley since 2012. She stated in 2010 that because her father is Chinese, she wanted to be more fluent in Mandarin Chinese, as well as read traditional Chinese characters.