Britney Spears Likes Speed
Britney Spears has been seen using a variety of "stimulants" to speed-up her metabolism recently. In addition to her massive Starbucks consumption, she's adding chugging Red Bull and has been carrying a medication called Provigil used "to improve wakefulness"...

And then there's that recent cocaine rumor!

Lindsay Lohan's Red Bull and Dildo Abuse
Secret Drug Parties of the Stars
Britney Chugs With Passion
Paris Hilton Does Drugs

Photos via X17Online