The hot accessory is a yellow bracelet being sold by the Lance Armstrong Foundation inscribed Livestrong.
LAF spokeswoman Michelle Milford, in Paris for the finish of the Tour de France, which Armstrong won for the sixth consecutive time, said 25,000 were sold Sunday on the Champs-Elysees.
The original order called for five million bracelets. Those sold quickly, and while exact figures are hard to pin down, Milford estimated more than six million have been sold.
The bracelets, which cost $1, are meant to be a symbol of hope for people with cancer or who have survived cancer.
Proceeds benefit LAF programs that help people with cancer.
Presidential candidate John Kerry appeared to have one on when he threw out the first pitch at the Yankees-Red Sox game Sunday night. Armstrong's girlfriend, singer Sheryl Crow, and actor Robin Williams also were spotted wearing them during the Tour.
They are available at wearyellow.com, LAF.org and Niketown.
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