Hyland said that people have been heavily commenting on her weight on her Twitter and Instagram accounts, even going as far as to say that she was "promoting anorexia" in an anti-bullying post.
The star had a kidney transplant in 2012 after being diagnosed with kidney displasia as a child.
As a result, Hyland has had to take prednisone which is known to cause swelling. She said that people have said online that she looks "pregnant or fat."
She asked her fans to: "love the you you set out to be. Be the best version of yourself. Be healthy."
You can read her entire post below:
Hyland recently starred in ABC's remake of "Dirty Dancing," and will be back as "Haley Dunphy" on "Modern Family" when it returns for season 9 in the fall on ABC.