Ferrari fans from France, Italy and Germany attended a silent 45thbirthday tribute to seven-time Formula One world champion MichaelSchumacher in front of the hospital in the French Alps, where he is being treated.
There has been no update on his condition, which had previously been described as critical but stable.
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The Duchess of Cambridge has been on maternity leave since the week before Easter.
The Duke and Duchess of Cambrige have been together for 15 years and will have three children under the age of four.
News of William and Kate’s third child was announced on September 4 and the duchess went on maternity leave on March 22.