intro: "Dancing With the Stars," now in its 14th season, has become one of the most beloved reality shows by mixing an irresistible cocktail of celebrities -- veteran and up-and-coming -- campy fun, over-the-top costumes and exuberant, honest-to-goodness dancing.
Test your fan knowledge with this trivia quiz, and watch the full episode of a special edition of "20/20": "Dance Floor Confidential: Behind the Scenes of 'Dancing With the Stars'" NOW.
quicklist: 1 title: Bedazzled text: About how many rhinestones adorn the average "DWTS" costume?
A. 500 to 1,000
B. 3,000 to 5,000
C. 5,000 to 10,000
D. 10,000 to 15,000
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quicklist: 2 title: Dancing With the Biggest Loser text: The Mirror Ball trophy and fame aren't the only good things the show can bestow on contestants. Many lose serious weight. Who lost the most during a season on the show?
A. Kirstie Alley
B. Kelly Osbourne
C. Joey Fatone
D. Ricki Lake
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quicklist: 3 title: Sewing for the Stars text: Approximately how long does it take to make each costume?
A. 10 to 20 hours
B. 20 to 30 hours
C. 30 to 50 hours
D. 50 to 75 hours
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quicklist: 4 title: Bailando Con Las Estrellas text: In how many countries is "Dancing With the Stars" broadcast?
A. 19
B. 55
C. 69
D. 80
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quicklist: 5 title: Not a Malfunction text: In what country, on an unaffiliated knockoff of "Dancing with the Stars," did a dancer infamously strip nude (click on video at right)?
A. Argentina
B. Germany
C. Brazil
D. Italy
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quicklist: 6 title: Dancing Abroad text: Which retired U.S. sports celebrity appeared on "Ballando con le Stelle," Italy's version of the show?
A. Mike Tyson
B. Magic Johnson
C. Emmitt Smith
D. Michael Jordan
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quicklist: 7 title: Dark Star text: On average, how many coats of spray tan and bronzer are applied to a contestant on show day?
A. 4
B. 5
C. 7
D. 27
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quicklist: 8 title: Answers text: 1: C. According to costumers for the show, the average costume has 5,000 to 10,000 rhinestones.
2: B. Kelly Osbourne lost more than 40 pounds. Honorable mention: Kirstie Alley has lost the most weight since the show -- 100 pounds. She lost 30 while on the show.
3: C -- 30 to 50 hours. Fifteen women make all the women's costumes, and a husband-and-wife team make all the men's.
4: D. "Dancing With the Stars" is broadcast in 80 countries including Estonia and India. Israel saw the first same-sex couple to compete in a version of the show. Austria's version was the first to feature a male couple.
5: A. The racy dance occurred on an Argentinean show similar to 'DWTS.'
6: A. Mike Tyson appeared on Italy's version of the show.
7: B. On average, dancers get five layers of spray tan and bronzer on show day.