The 'Don't Be So Hard On Yourself' singer said knowing she had negatively impacted on the trans community 'ripped out a piece of my heart'.
The channel is holding Black Takeover Day in 2021 to showcase Black talent on and off screen.
The UK comedian will be part of the judging line-up for the show's second series alongside Rita Ora, Davina McCall and Jonathan Ross.
The two celebrities chose to bake cakes which depicted them naked in a bubble bath for their Showstopper Challenge.
The 40-year-old model impressed Paul Hollywood with her breakfast muffin biscuits.
'Love Island's' Samira Mighty discusses lack of diversity on television with Mo Gilligan.