Identical but Different

Identical twin sisters Sierra and Sienna Bernal. They are the only identical twins in the world where one twin is a primordial dwarf.
http://www.mirror.co.uk/news/real-life-stories/identical-twin-girls-set-apart-677618

Read about Sienna's life in her blog, "Living life Sinny-sized".
http://www.livinglifesinnysized.com/