Credit: John Shearer/WireImage for Best Buy

Don't ever accuse Lady Gaga of not taking care of her fans.

On Monday, when she noticed the large number of people standing in line for her autograph at a Best Buy store in West Hollywood, the 23-year-old "Pokerface" singer -- who is now promoting her second album The Fame Monster -- dropped $1,000 for pizzas from Papa John's so her fans wouldn't get hungry while waiting.

"Sending all my little monsters little pizzas for waiting all night for me at best buy," she Twittered. "I hope you're hungry ... eat up I love u!"

She also thanked her fans for helping make The Fame Monster a hit on iTunes.

"To all my beautiful fans, I love you more than anything," she Twittered. "Thank u 4 making the fame monster number 1 on itunes. You are the only reward I need x gaga (sic)."