Twinning Bikinis is the new Friendship Bracelet

The twinning bikini trend is all the rage for Hollywood’s most sizzling stars to show their friendship and love for their besties out loud and we’ve got photos to prove it!

It’s International Bikini Day, time to rejoice the beauty ( Photo Gallery )

National Bikini Day marks the anniversary of the invention, which is now at 73 years. The two-piece dress was named after a United States island called Bikini Atoll which was a famous spot for atomic testing.