Me gusta tu/su traje (informal/formal).
If you are referring specifically to a woman's dress (i.e. a skirt or gown) you should say, Me gusta tu/su vestido.
The noun "dress" in spanish is "vestido"
"white dress" translates to, "vestido blanco" in Spanish.
how do you dress = ¿Cómo te vistes?
El vestido
vestido informal
los zapatos
Odio este traje
Me encanta ese vestido
Pantalones de vestir
They dress normal more like American style
Typically, the answer to your question is to say "I like dresses." If you like a particular dress, you should say "I like this dress." If you like the act of putting clothes on your body or on somebody else's body, you should say "I like to dress myself/somebody else."
As in "put on a costume", it would be "disfrazarse". To dress well is "ponerse elegante."