Kate Middleton: Go, Prince William, Go!

The woman who will be Queen played the role of cheerleader for a day.

Kate Middleton made it clearer than ever that she's on her way to royalty on Friday when she joined the top British family to watch a certain fellow graduate from his military academy.

Indeed, Prince William was commissioned as an officer in the Household Cavalry as he graduated from Sandhurst in front of his grandmother, Queen Elizabeth, and his father, Prince Charles.

But it was Middleton, widely speculated to be the prince's future fiancée, who grabbed all the attention as she walked to the historic parade ground with William's private secretary and two of his closest pals.

It was the first time she has been a guest of her boyfriend at an official royal engagement with the Queen present. We can only assume she acted a bit more properly there than Tara Conner, our former Miss USA.

Middleton sat in the front row with her mother Carole (her father Michael was also there) and beamed as William made the traditional march past.

Next up, the Prince will train to become a troop commander in an armored reconnaissance unit, following in the footsteps of his 22-year-old brother, Prince Harry.