To be physically attractive but lack any distinguishing achievements, intelligence, abilities, or other personal characteristics. Tiffany might be popular because of her looks now, but once we're out of college she's going to be just another pretty face.

A phrase said of someone who is physically attractive but lacks any distinguishing achievements, intelligence, abilities, or other personal characteristics. The phrase is often used in the negative to mean the opposite ("not just another pretty face"). Tiffany might be popular because of her looks now, but once we're out of college she's going to be just another pretty face.