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If you have a button down shirt, you could wear it all buttoned up one day

MORE: Follow Wonderwall on MSN for more top news and photo galleries Charbonneau/BEI/Shutterstock 2 / 29 shutterstock_editorial_397833f It's one of the most iconic fashion moments of all time: Jennifer Lopez bared her bellybutton in a green tropical-print Versace dress with a plunging neckline during the 2000 Grammy Awards in Los Angeles

Kanye, 47, marked her birthday on Jan

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Also check out our DIY options for gaping blouses and note that if you just want a collar beneath a sweater, you can always go for a fake collar instead