"New dressing" refers to a fresh or different style or appearance that someone adopts in their clothing, appearance, or behavior. It implies a change or update in how someone presents themselves. Full definition
I've never been someone who goes out and buys new dresses for weddings. (thefoxandshe.com)
I wore this gorgeous new dress from my boutique — I love how light, feminine and sexy this dress is! (laceandlocks.com)
This dress is such a beautiful fit on you and that's awesome that it's so comfortable — something I always like to consider with new dresses! (cici-marie.com)