Miley Cyrus Credit: Luca Teuchmann/Getty Images

What a way to start the birthday weekend. Miley Cyrus' residence was burglarized on Friday, Nov. 22, the LAPD North Hollywood Community Police Station confirms to Us Weekly. It is currently an ongoing investigation and property was taken from her home.

The incident occurred sometime in the afternoon, but there were no injuries and nobody was home at the time.

"She's extremely upset and a lot of personal items were stolen," a source tells Us. "She's really shaken up about the whole thing."

The "We Can't Stop" singer isn't having the best birthday so far. Cyrus turns 21 today, and has been in the middle of gearing up to perform at the American Music Awards at the Nokia Theatre in Los Angeles on Sunday night.