This comes after trolls forced the 'Bodak Yellow' hitmaker to delete her Instagram.
In a Tweet, Lady Gaga wrote, "It is so hard to be a woman in this industry. What it takes, how hard we work through the disrespectful challenges, just to make art. I love you Cardi. You deserve your awards. Let's celebrate her fight. Lift her up & honour her. She is brave. (sic)"
Cardi B took home the Best Rap Album prize at Sunday's ceremony for her debut LP 'Invasion of Privacy'.
The singer, however, had to defend her win on social media when some people claimed other nominees were more deserving of the gong.