Maxim models from Canada.

Nikki and Brie Bella

WWE divas.

Kristina and Karissa Shannon

Hugh Hefner's exes.

Nicole and Natalie Garza

Wrigley's "Doublemint Twins."

Kate and Anne Madsen

"The Twin City models."

Mariana and Camila Dávalos

South American TV actresses hailing from Medellin, Colombia.

Tonya and Rea French

British glamour models known as "The Essex Twins."

Hailey and Sierra Partridge

The Serena and Venus Williams of the professional surfing circuit.

Elizabeth and Marcela Montoya

Two bombshell Colombian models.

Bia and Branca Feres

Models and synchronized swimmers from Brazil.

Honorable Mention:

Jenna and Barbara Bush. Just because.

Who's your favorite? Sound Off in the comments...