In the UK one in every 65 pregnancies results in a multiple birth – that includes twins, triplets and even larger groups of siblings.
To celebrate the twins we have here in Leeds we asked our readers to share their photos of pairs of twins who were born or live in the city.
We were flooded with hundreds of responses and have collected the very best photos together in this article – click through to see many pairs of twins from Leeds.
25. Boe Mitchell
Boe Mitchell said: "Poppy-Mai and Rosie-Faye sassy little seven year old's." Photo: Boe Mitchell
26. Natalie Marie
Natalie Marie said: "Rudi and Ramona - now six years old." Photo: Natalie Marie
27. Ruth Dodsworth
Ruth Dodsworth said: "Me and my twin and our children." Photo: Ruth Dodsworth
28. Joanne Midgley
Joanne Midgley said: "My four year old grandson." Photo: Joanne Midgley
29. David Allen
David Allen said: "Myself and my twin Catherine Houghton at a Twins Club event at Temple Newsam approx 1993." Photo: David Allen
30. Lauren North
Lauren North said: "My identical twin daughters aged seven was born on 26th October 2015, five months early due to being born premature at 24+1 weeks in West Yorkshire." Photo: Lauren North