To celebrate their last North American performance in Montreal, Britney's male dancers took the ringleader's advice and.... got naked! 

As a prank, they stripped down into pink briefs for 'Boys' and 'If U Seek Amy.'   Their briefs even say "True Brit" on the waistband! 

Check out the sexy and hilarious gallery from Tuesday's show in Montreal after the jump.

Photos by Jeremy Cowart

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Welcome to the ninth installment of Stage-to-Street, BritneySpears.com's fashion series which takes all of Britney's concert costumes and turns them into outfits for every occasion. This week, we are translating Britney's 'Freakshow' stage look into a sexy street look perfect for a night out on the town.

1) Shiny Too-Short Tube Dress / American Apparel ($38) - Britney has rocked several versions of the 'Freakshow' costume on her 'Circus' tour. This tube dress is super sexy and mimics the shape of Britney's long gloves.

2) Storm Purple Shiny Sash / American Apparel ($24) - In the second and most current version of this costume, Britney wears a big purple bow on the back of her outfit. This shiny lamé bow in storm purple looks just like it, and the texture matches this look's tube dress and legging legs.

3) Sterling Silver Tassel Earrings / The Limited ($34.50) - In the first version of this costume, Britney, showed off some tassels. These sterling silvers tassel earrings are so chic and do a great job at mirroring the original 'Freakshow' costume.

4) Patent Pumps / Charlotte Russe ($22.99) - Patent leather is a definate must-have of the season. These are almost identical to Britney's and are a great price!

5) Shiny Legging Legs / American Apparel ($42) - If you followed the 1st installment of Stage-to-Street, you will have some left over legs from your cut-off lamé shorts. Put these on like socks, then pull the bottom of the legs down to your toes and put your pumps on over them. These will give you the same unique, shiny sock look as Britney.

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This is BritneySpears.com's final roundup of fan costumes for Britney's North American leg of the tour. So many of you went all out, showing your Britney pride at the concerts, that you had to be recognized for it on the site! So take a look at the gallery of fan fashion after the jump.

Miss any of the past costume roundups? Then take a look through the galleries in Fans Dress Up for the Circus & More Fans Dress Up for the Circus! You might even see yourself!

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