Did you know that the bikini was invented in 1946 specifically around a contest to create the world's smallest bathing suit? Despite its unexpected beginnings, the two-piece is celebrating its 66th anniversary this month.

Click through to see more bikini milestones from the past 66 years.

More on Luckymag.com:

• The History of the String Bikini
• Best Swimsuits For Your Body Type
• 50 Swimsuits Under $50
• 10 Cover-Ups for Under $50
• Rebuild Your Wardrobe For Under $500

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