Brooke Allen, left, and her twin Mallorie Allen, both 17, of Reed City, Mich., pose for a portrait during the 40th annual Twins Days festival, in Twinsburg, Ohio. Twins Days is the largest gathering of twins and multiples on earth.

Identical Twins Perrina Bernovdy, far left, Geneva Bernovdy, far right, both of Atlanta, Ga., turn a jump rope for Elly Fulks, left, and Emmy Fulks, right, both of Scottown, Ohio, during the 40th annual Twins Days festival in Twinsburg, Ohio.

Spencer Nick, left, and his twin Skylar Nick, both of Chicago, Ill., pose for a portrait during the 40th annual Twins Days festival in Twinsburg, Ohio.

Over 1800 sets of twins and multiples gather for a group portrait during the 40th annual Twins Days festival in Twinsburg, Ohio.

Charlotte Italiano, left, of Poland, Ohio, and her twin sister Rose Italiano-Pacalo, of North Lima, Ohio, both 83, show their matching jewelry after winning the oldest twins award during the 40th annual Twins Days festival in Twinsburg, Ohio.

Amy Spielman, left, and her twin sister, Julie Schneider, both of Rockford, Ill., wear clocks set three minutes apart  during the 40th annual Twins Days festival in Twinsburg, Ohio. Julie was born three minutes before her sister.

Kat King, left, and her twin Margaret King, both of Oxford, Miss., walk through the fairgrounds in costume during the 40th annual Twins Days festival in Twinsburg, Ohio.

Jeremy Troyer, left, and his twin Jonathan Troyer, both of Millersburg, Ohio, pose for a portrait during the 40th annual Twins Days festival in Twinsburg, Ohio.

Jim Mazurkiewicz, left, of Warren, Mich., and his twin John Mazurkiewicz, of Brighton, Mi., eat lunch during the 40th annual Twins Days festival in Twinsburg, Ohio.

Sam Muscalo, left, and his twin Joe Muscalo, both 16, of Buffalo, Ny., dressed as “The Twinstones” during the 40th annual Twins Days festival in Twinsburg, Ohio.

Rachel Ream, left, and her twin Alyssa Ream, both 17, of Naperville, Ill., pose for a portrait during the 40th annual Twins Days festival in Twinsburg, Ohio.