Britney Spears has been going nonstop since preparing for her Femme Fatale tour with Nicki Minaj. While some have been criticizing her performances as not being as energetic as old Britney, there's no denying that she's still got it.

And now, Spears has officially released two remixes of her song, I Wanna Go. The video for the remix features the radio edit version of the song, produced by DJ Frank and DJ Alex Dreamz. The second remix will be released later this month.

I Wanna Go marked Spears' 21st top 40 Hot 100 hit. Her Femme Fatale album was one of the most anticipated of the year. She and Minaj will be in Vancouver on Friday and will wrap up the tour in August.

And her fans have proved that they, too, are still going strong. Britney performed at the Tacoma Dome on Wednesday night, and one fan waited in line for twelve hours. Rebecca Dominguez arrived at the Tacoma Dome at 6:30 a.m., 12 hours before the gates even opened.

"To me, it's just dedication," the fan said. "I know it sounds crazy."

Yeah, it kind of does, considering if you already bought the ticket, you're in. There's really no need to wait in line. But Britney's fans aren't backing down. Another fan got there early because he was "too excited to stay at home."