mannequin, mannikin

Mannequin or mannequin means a model for the demonstration or display of clothing, either live or as a dress form or shop-window figure--
She worked as a mannequin for a department store when she was a young woman.
What size is the dress on the mannequin? Someone is interested in buying it.

Manikin or manikin ( sometimes spelled mannikin, rhymes with mannequin ) means a little man, particularly used to refer to a woman dressed as or behaving like a man--
He got mad and tried to swing when they patted his head and called him a manikin.
They called her a little manikin, because she wore men's clothing, and tried to spit and swagger like a man.
Manikin may also mean a model of the human body used to teach anatomy--
The nursing students had to memorize all the parts of the body, and label them on a manikin.

Now that you know that, you can say--
"If that little manikin would fix her hair and put on a stylish dress, she'd look as good as any fashion shop mannequin."