Photos: Shannon Brown and Monica Party it Up

Shannon Brown turned 25 years old...and his fiancee, R&B singer Monica, 30, party with friends at theColony in L.A. the other day.

 Here's the flicks:

Monica and Shannon Brown

on the red carpet

Derek Fisher and wife Candace

hanging in Hollywood

cutsie couples

group photo

Ron Artest made an appearance

Shannon on the carpet

birthday cake!