Lucy does not consistently wear the same outfit. However, she always has a belt that, along with keeping her skirt up, holds her Celestial Spirit keys and a whip with a heart-shaped end. She often wears black, leather high heeled boots. She also bears a striking resemblance to her mother.[
Considering how Lucy wasn’t taught how to fight as a kid unlike basically everyone else in the guild I’d say she’s pretty f*cking strong