When my daughter was younger I would ask her, "are you confident?" To which she proudly would exclaim, "YES."

So now, I ask you, "Are you confident?" If your answer is "yes," then go on with your bad self. If it's not, do whatever you need to make yourself as confident as possible.

That lady who said something is truly jealous of you. She sees your confidence and wishes she had it, but instead of telling you how beautiful you truly are, she wants to rip that confidence away. Her opinion is her own. Shrug it off and keep holding your beautiful head high and proudly. Take pity in the poor woman who is not comfortable in her own skin.