Someone's in a good mood!

Kristen Stewart jetted out of Los Angeles International Airport and headed to Paris on Friday, and the notoriously poker-faced actress flashed us a quick smile before making her way through the terminal. We're not sure where her girlfriend Alicia Cargile was, so it seems like K. Stew will be rolling solo in France...

The 25-year-old starlet got a manicure and a pedicure at a nail salon in Beverly Hills the previous day, so clearly she's ready to make a few red carpet appearances. She'll be promoting her upcoming film American Ultra, which hits theaters next month. The film is about a pot-smoking sleeper agent named Mike Howell (played by Jesse Eisenberg) who is "marked as a liability and targeted for extermination, but he's too well-trained and too high for [the government] to handle." K. Stew plays Howell's love interest, and naturally she's also a major stoner in the flick. Sounds pretty different from the work she's been doing lately!

In case you missed the trailer, check it out below: