Sanaa Lathan, 42, empties her purse for Us. Credit: Michael Pirrocco

Sanaa Lathan, the star of The Best Man Holiday (out November 15), is always ready to dance the night away, thanks to the flip-flops in her Stella McCartney tote. "I've been known to put them on after an event," says the L.A.-based actress. "You can expire after a while in heels!" What else does she stow?

Scarlet Fever

"I carry MAC's Ruby Woo matte red lipstick. It's a classic. If you ever want to get a little glam, just put a bit of that bad boy on."

Opening Up

"I have two mystery keys in here - no idea what they unlock. Maybe they'll be the keys to the heart of some man who comes into my life!"

Spice Girl

"If I get little salt and pepper packets from takeout, I keep them in my bag. I add salt to everything."

Howl Cute!

"I have a red laser light that I shine on the floor for my briard, Sophie, to chase after. My bulldog, Pops, just watches her with his tongue hanging on the floor."

Spilling Secrets

"I love Child's perfume oil. The scent is so fresh. Once I didn't put the top on, and my bag smelled really fresh.'"