Crown Princess Mary and Crown Prince Frederik of Denmark leave the University Hospital with their newborn daughter in Copenhagen, Denmark, Monday April 23, 2007. Denmark's newborn princess slept soundly during her first

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Double joy: Crown Prince Frederik of Denmark shows off his newborn twins

Crown Princess Mary of Denmark (L) and Crown Prince Frederik of Denmark present their newborn daughter at the Rigs hospital of Copenhagen, Denmark, 23 April 2007. The new princess takes the third

In Royal Circles

Crown Princess Mary and Crown Prince Frederik left the Hospital in Copenhagen on Friday January 14. 2011 with their new twins Stock Photo - Alamy

55 Crown Prince Frederik And Crown Princess Mary Of Denmark Leave Hospital With Photos & High Res Pictures - Getty Images

Prince Frederik and Princess Mary at sick father's bedside

In Royal Circles

Crown Princess Mary of Denmark (R) and her daughter Princess Isabella (L) smile in Grasten, Denmark, 03 August 2007. Grasten Palace was renovated for Crown Prince Frederik (later King Frederik IX and

Princess Mary attends UNICEF event as the Danish royal family meet for 'peace talks

In Royal Circles

Crown Princess Mary of Denmark (L) and her daughter Princess Isabella (R) smile in Grasten, Denmark, 03 August 2007. Grasten Palace was renovated for Crown Prince Frederik (later King Frederik IX and

55 Crown Prince Frederik And Crown Princess Mary Of Denmark Leave Hospital With Photos & High Res Pictures - Getty Images