When you are a famous Hollywood star like Scarlett Johansson, you have no time to look unpretty.

She revealed that she always want to look good because she might bump into someone she knows or be photographed by the paparazzi.

The star shared that she always bring a lipstick on her bag.

She said to Style magazine, “I always like to put a little bit of make up on.”

Scarlett’s style rule is to not wear sweatpants-EVER.

“I’m not the kind of person that just slops around in sweatpants.”

The 27-year-old star says that red lipstick is the best.

“My absolute must-have is a really rich and vibrant red lipstick.”

She added, “I always keep red lipstick in my bag because I never know when I might show up to an event and be completely under dressed. ”

“I feel like red lipstick is the cure-all for everything.”

The actress stars in the latest film, We Bought a Zoo with Matt Damon, Thomas Haden Church, Colin Ford, Desi Lydic, Patrick Fugit and Elle Fanning.