Twins Trust is the only UK-wide charity for twins, triplets and more. 

Beyoncé has shared the first picture of her twins one month after they were born, confirming their names, Sir Carter and Rumi.

CEO Keith Reed said: "Congratulations to Beyoncé and Jay-Z on the birth of twins, Sir Carter and Rumi. 

"Welcoming twins into the world is an utter delight and we're sure they, like many multiples parents here in the UK, are excited to start this brand new chapter in their lives." 

To celebrate the first photo from the family we have put together some interesting facts about twins for you all to enjoy

• Of the 697,852 maternities in England and Wales, 10,901 were twins, 169 were triplets and 3 were quadruplets or higher-order multiples. That means approximately 16 in every 1,000 pregnancies was a multiple birth in 2015 (ONS latest figures).
• Approximately 40% of multiple birth babies need some form of neonatal or special care.
• Almost half of multiple births and born prematurely.
• Identical twins do not have identical finger-prints.
• Twins start to bond in the womb! Researchers at the University of Padova in Italy studied 3D videos of twins in the womb and found they were reaching for each other and touching one another.
• It’s recommended that uncomplicated twin pregnancies are delivered at 37 weeks, or at 36 weeks if the babies share a placenta. (In accordance with National Institute for Health and Care Excellence guidelines).
• The scientific study of twins is known as “gemellology”.
• The first “test tube” twins were produced in Australia in June 1981.
• William Shakespeare was a father of twins – Hamnet and Judith. 
• Identical twins don’t run in families but fraternal (non-identical twins) can. Identicals are created when an egg is fertilised and splits in the womb and this can happen completely at random. But women can have a genetic tendency to produce more than one egg per cycle – and this is how fraternal twins are made.
• There is a sub-section of identical twins known as “mirror twins”. Rather than their appearances being identical, these twins are the mirror image of each other. So, for example, one child could have their hair parting on the left and the other child on the right. They may also have birthmarks on opposite sides of their body or be right and left-handed.