In an Instagram post the singer said she's "proud" of her looks and that "you should be proud of yours too".
It's after criticism of her stomach with some saying the 30-year-old "wasn't fit enough".
More than 100 million people watched the legendary half-time show in the US and around the world.
"I heard my body is a topic of conversation..." she begins, before urging fans to ignore criticism "no matter who you are or what you do".
"I could give you a million reasons why you don't need to cater to anyone or anything to succeed.