It's a movie about a overweight woman that works as a secret advice columnist on a famous fashion magazine under a fake name. Her two friends are also overweight and they work together to lose weight. In the end there is a party taking place for the main lady so everyone can see what she looks like. The main lady has lost the weight she wanted and enters the party an tells the truth about her identity and to the person she loves.

I watched this movie years ago and I loved it but don't know what its called help me? :S

Try this:
Lying to Be Perfect (2010) (TV) - Synopsis

Omg that's the one, thank you! :)

:)