The phrase "to add some edge" means to bring a little excitement, boldness, or uniqueness to something in order to make it more interesting or different from what is expected.
Sentences with «to add some edge»
Give fine dining added edge with acid - pink accessories and a funky floral print. (livingetc.com)
A jacket such as this is a must have this fall, and will add that edge of glamour to even the most casual of styles. (justthedesign.com)
This unique full metal style is designed with a geometric heart frame for added edge. (sunglass.la)