Britney Spears and Lady GaGa are the biggest stars of the year so far, according to a new online music fan poll.
Billboard bosses asked readers to vote for their most valuable performers, comebacks, singles, videos and albums of the first six months of 2011 - and the two pop superstars both featured in the top three of most major categories.
Spears and Gaga were declared the top candidate in a combined seven categories once the hundreds of thousands of votes were tabulated last week (ends01Jul11).
Spears' Femme Fatale was named the Favorite Billboard 200 Number One album, while her single Hold It Against Me won the Favorite Hot 100 Number One Song category. Her I Wanna Go promo was voted Best Music Video and her Femme Fatale dates landed the Best Tour nod from fans.
Meanwhile, Gaga landed the Best Style vote, and her set at the U.K.'s Radio 1's Big Weekend was named the Best Festival Performance.
Wiz Khalifa was voted Best Newcomer, Jennifer Lopez the Best Comeback and Beyonce, the Best Awards Show Performance for her set at the 2011 Billboard Music Awards, where she was presented with the Millennium Award.
The final results for's 2011 Mid-Year Music Awards are:
First-Half Mvp: Britney Spears
Best Newcomer: Wiz Khalifa
Favorite Hot 100 No. 1 Song: Hold it Against Me by Britney Spears
Favorite Billboard No. 1 Album: Femme Fatale by Britney Spears
Best Music Video: I Wanna Go by Britney Spears
Best Comeback: Jennifer Lopez
Most Memorable Meltdown: Chris Brown at Good Morning America
Best Festival Performance: Lady Gaga at Radio 1's Big Weekend
Best Tour: Britney Spears' Femme Fatale Tour
Best Awards Show Performance: Beyonce, 2011 Billboard Music Awards
Best Music Reality Show: American Idol
Best Dressed: Lady Gaga
Most Anticipated Release of 2011's Second Half: Tha Carter IV by Lil Wayne.