She said: "You know, there are just some things that my sober mind keeps me from sharing. That ends tonight. I've got some things I need to get off my chest."
"Why does me being fat offend so many people? Is it because I'm confident and I'm fly and I'm sexy? Do my thighs offend? Does my stomach offend? Does my big juicy ass offend? Why?"
Amber went on to insist that she is proud of her shape and revealed she attracts plenty of positive attention from the opposite sex.
She added: "Let my big ass live. I let you all live. I love all colours, shapes and sizes. So, just so you know, when you come on here and you call me fat, it's not an insult dummy.
"My ass is fat and the fellas love it and so do I."
Meanwhile, Amber, 30, recently insisted she leads a very "normal" life despite her fame, and doesn't worry about her success coming to an end so long as she can still pursue her passions in other ways.
"To me, Hollywood is a place where I go to play, it's not real. My life is very normal. I always make sure that I leave whatever it is I'm doing at work outside my home," she says.
"It's a privilege to be a part of it, but if it was all over for me, I would just find something else to do, even if it was doing local theater or gigs.
"Singing, acting and dancing will always be part of my life."
Amber is best known for playing Mercedes Jones in Glee and found adjusting to life without the show "weird".
She explained "All good things must come to an end. But the last week was so sad.
"It was weird because you go from being on set every day and having people telling you what you are doing tomorrow, to having to take control of your life."