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MK Cooper

Most Popular
7, 2002
Webster, TX
Birth Sign
7, 2002 (age 18)
Webster, TX


Web star who has earned over 210,000 YouTube subscribers. She is known on social media as Officially MK. She is the cousin of the child stars of the Bratayley YouTube channel. 

Before Fame

She became active on YouTube as early as March of 2015. She became a competitive level 4 gymnast at the age of six. 


She is an active athlete, competing in wrestling, basketball and football. 

Family Life

Her real name is Mary Kate Cooper. She has an older sister named Danielle and a brother named Nick. She had another brother named David who passed away in 2013. She dated fellow social star Chase Hudson in 2015. 

Associated With

She has gained popularity for frequently appearing alongside her cousin Annie LeBlanc on the Bratayley YouTube channel.