Ariana Grande signs copies of her August 2013 cover of Seventeen magazine at Barnes & Noble at The Americana at Brand on Monday (July 8) in Los Angeles.

“Wish I could have met everybody who waited but security said it was beginning to be a safety hazard & I was told to keep moving I apologize,” the 20-year-old actress/singer later tweeted.

PHOTOS: Check out the latest pics of Ariana Grande

The night before, Ariana was spotted holding hands with a gal pal while heading back to her car after a night out in Los Angeles.

Photos: Getty

Posted to: