Leighton Meester: California Concert Gal!

Leighton Meester rocks the house at her concert at the Troubador on Monday (June 13) in West Hollywood, Calif.

The 25-year-old actress and singer performed numerous songs, and even accompanied herself on the guitar! The band Check in the Dark was the opening act.

Leighton‘s Gossip Girl co-star Michelle Trachtenberg was in the audience to support her pal!

Leighton tweeted, “Yay! Back on US soil and gettin excited for the Troubadour:) Get there at 8pm to see @checkinthedark open!! #isitmondayyet”

Last week, Leighton was in London for the launch of the Vera Wang fragrance, LoveStruck.