When Demi Lovato blew the candles out on her cake at her concert on Tuesday in New Jersey, she said that she already had everything she wanted. So for her birthday she bought a house... for her parents! "For me to give [that] to my family on my birthday, that was the best present," Demi says.

Demi will also be living at the house and she's totally stoked about her new pad. "It's got pretty much everything you could possibly imagine in it," she says. "It's the most beautiful, homey-feeling house. I love it." The pool even has a water slide!

In other Demi birthday news, she celebrated her big 1-8 last night at the restaurant Buddakan in New York City with friends and family, including her sister Madison De La Garza and Joe and Nick Jonas. (Joe was spotted with his rumored new girlfriend Ashley Greene just hours before the party!)

Don't forget to send Demi your birthday wishes!