CHRISTIAN ENROLS IN KING BOOTCAMP!

The prince is growing up... and his Aussie-born mum couldn’t be prouder

Resplendent in his crisp suit and flanked by the Queen and the future monarch, Princess Mary’s eldest son has transformed seemingly overnight from a baby-faced cutie to an intelligent and determined young man ready to face his future as King of Denmark.

Now 14, Prince Christian was invited to pose in an historic portrait alongside his formidable 80-year-old grandmother Queen Margrethe and father Prince Frederik, 51 – and Woman’s Day can reveal the young heir’s honour came amid him taking to “king lessons” with aplomb.

“Margrethe and Fred have spent lots of one-on-one time with Christian since he’s been back at the palace after cutting his school year in Switzerland short,” says a source. “Fred has been telling him to enjoy the party and adoration that comes with being future king, and marry later in life like he did.