Avril Lavigne

The singer made her first performance in over a year.

Responding to a Twitter DM from a fan, Avril Lavigne revealed that she has quietly been suffering from "health issues."

Remember when Avril Lavigne beat out Justin Bieber for the title of most famous Canadian? Miley Cyrus sure does, and she's jokingly pissed that she didn't land the No. 1 spot -- even though she's, um, not even Canadian. The 'Wrecking Ball' singer is so annoyed, in fact, that she hilariously duked it out with the reigning champ herself during her Bangerz Tour stop in Toronto last night (Mar. 31). 

The Backstreet Boys just announced the dates to their "World Like This" tour.The tour started last year but the group decided to extended into this summer.

Avril Lavigne shed one of her style security blankets -- thick, black eyeliner -- for a major makeover for the January issue of Allure. Actually, it was more of a makeunder for the singer, known for her rocker chick look.

Everyone was shocked by the quickie engagement of Nickelback singer Chad Kroeger and Avril Lavigne, and now we may have a reason why they're moving so fast: Photos are making a few tongues wag about a possible pregnancy. You say "shotgun," we say "wedding!"

CELEBRITY BIRTHDAYS (9/27/11): Gwyneth Paltrow - 39 Academy Award winning actress, singer, the face of Estée Lauder's Pleasures perfume, wife of Coldplay's Chris Martin, and mother to Apple and Moses