15 Celebs You Would Never Guess Were Twins

12. Aimee Ann and Katy Ann Duffy

Aimee Ann Duffy (better known simply as Duffy) delights her fans with her music, but many of her fans are not aware that she has a twin sister. Duffy not only has her twin sister, but an older sister as well, and both of them make frequent appearances in her music. Believe it or not, they were separated when their parents divorced (Parent Trap anyone?) at the age of 10, but now they are best buds.