Funds raised will help to pay for research into a vaccine for Type 1 diabetes as well as aiming to identify the 850,000 people in the UK who could be at risk from the condition.
Every year 24,000 people with diabetes die earlier than expected in England and Wales.
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The "world's first transgender doll" has appeared at New York's Toy Fair and will go on sale in July.
The exhibition includes the gown she wore when she danced with John Travolta at the White House and a dress used for a Vanity Fair cover.
The singer shared the image of her twin girls along with a message saying "Today's blessing brought to you by Adidas!".