Let's face it -- the world's fascination with twins will never go away! Whether their conjoined, identical, or fraternal, having a twin never fails to amaze others.

Throughout the years we have been fortunate enough to see some famous double duos grace the television screens. Here are some famous celebrity twins!

Tia Mowry-Hardrict & Tamera Mowry-Housley

Sister, Sister stars Tia Mowry-Hardrict and Tamera Mowry-Housley couldn't be more like alike! The Mowry sisters are identical twins, although same can spot the difference: Tamera has a mole on her cheek.

The siblings also both married men that have the same first letter in their last names. Tamera is a mom to a boy and a girl, and Tia has a son and is expecting her daughter this year.

Mary-Kate & Ashley Olsen

Probably the most famous celebrity twins are the Olsen sisters! Mary-Kate and Ashley began their careers as infants on Full House. Since then the girls have become international superstars after starring in other films such as Our Lips Are Sealed, It Takes Two, New York Minute, and Passport to Paris.

The sisters haven't done much acting since 2014. However, they are considered fashion icons for their clothing line and their daring, sometimes strange, looks. 

Scarlett Johansson & Hunter Johansson

A lot of people didn't know that Scarlett Johansson had a twin, so imagine everyone's surprise when they found out that the Avengers star has a twin brother, Hunter. Hunter is also an actor but remains very private and isn't seen much in public. In addition, Hunter has done some political work and had a hand in former President Barack Obama's campaign in 2008.

Dylan & Cole Sprouse

The Suite Life of Zack and Cody stars Dylan and Cole Sprouse began their careers in the late 90's. The Sprouse brothers portrayed Ross Geller's son, Ben, on Friends, and appeared in Big Daddy opposite Adam Sandler.

These two were considered "teen heartthrobs" during their days on the Disney Channel. Cole is currently on the CW hit drama Riverdale, and Dylan has a few films coming out in 2018.

James & Oliver Phelps

James and Oliver Phelps are best known for their roles in the film version of the Harry Potter series. The Phelps brothers starred in all eight films as Fred and George Weasley.

Since 2014, the British actors have not been on any recent films, but after playing iconic roles for over a decade, the two have decided to focus on their second passion: golfing. 

Which celebrity twins are your favorite?