Web star who has earned over 950,000 fans on her marykatecooper TikTok account as well as more than 210,000 subscribers on YouTube. She has been known on social media as Officially MK. She is the cousin of the stars of the Bratayley YouTube channel.
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. In June of 2018, she posted a video of Harry Styles at his concert.
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.
She has gained popularity for frequently appearing alongside her cousin Jules LeBlanc on the Bratayley YouTube channel.