Karrueche Tran chris brown aventine los angeles hollywood rehab singer rihanna

When the cat's away, his girlfriend will play!

Karrueche Tran got all dolled up to party at Aventine in Hollywood last night, and the model didn't appear to be missing on-again/off-again boyfriend Chris Brown, who is currently undergoing treatment for anger issues at a Malibu rehab facility.

The brunette bombshell put her amazing figure on display in a cropped black sweater and red plaid pants, and we have a feeling she's trying to show Breezy what he's missing!

Speaking of the Hollywood bad boy, he is countersuing a woman who claims the singer pushed her to the ground during a nightclub altercation at Heat Ultra Lounge in Orange County last June, TMZ reports.

We think Miss Tran should use this time to make a clean break from her troubled beau!