Kate opted for the colors of the Union Jack today as she joined William and a host of royals to watch Zara Phillips compete at the London Olympics.

The Queen’s granddaughter was riding in the Cross Country phase of the Eventing competition;, Zara was on her horse High Kingdom. Below we see her taking a jump.

The Duke and Duchess watching the event. 

Also viewing today’s competition, Prince Harry, the Duchess of Cornwall, Princesses Beatrice and Eugenie.

Kate brought back her navy Smythe Blazer by Toronto-based designers Andrea Lenczner and Christie Smythe.

Kate previously wore the jacket for her trip to Canada last June. The cotton blazer features that distinctive cutout on the back, peaked lapels, welt pockets and a front coin pocket, as well as the one-button closure. She wore it atop a pair of navy trousers we have yet to ID.

Kate also sported a white Adidas Team GB shirt, and the Stuart Weitzman Corkswoon style wedges, we believe both items are the same worn on Friday for the Torch Relay event.

She wore a pair of Givenchy sunglasses when the sun was at its brightest. The Duchess accented with pearl stud earrings she has previously worn.

Both she and William wore official London 2012 lapel pins.

The lapel pin is available in the USA for $8.95, I presume it can also be found at other online sites.

Kate also wore sunglasses.

They are a Givenchy style. 

Another view of the royals today.

The course was quite a challenge for many riders today, with several taking a tumble. Below we see an image from Zara’s ride yesterday during the Dressage element of the competition.

Zara’s husband, Mike Tindall, is cheering her on and tweeting photos, this one is of the equestrienne warming up before yesterday’s event.

Yesterday those watching Zara compete included her mother, Princess Anne, who rode as a competitor in the 1976 Olympics, and her grandfather, the Duke of Edinburgh.

It turns out Zara wasn’t celebrating just her outstanding performance:

Another view of Kate at today’s event.

In addition to the Equestrian competition, Princes William and Harry also watched Gymnastics today.

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Prince William was busy yesterday, he was at Wembley for men’s football, joining another notable to watch the match between Great Britain and the UAE team.  More from today’s Express:

Despite being left out of the side, David Beckham proved to be a good sport by joining Prince William at Wembley Stadium to cheer on the home side, who triumphed 3-1. Becks’s son, Brooklyn, was also there cheering on Team GB.

The Brits were victorious in the match, winning 3-1.

The Team GB Women’s Football team was on hand to cheer their male counterparts, they were able to meet William, this picture comes via Team GB’s Karen Carney.

Karen Carney (Team GB Football) Twitter Feed

David Beckham also posed with the team.

Karen Carney (Team GB Football) Twitter Feed

It sounds like a grand experience for the entire group, a tweet from Ms. Carney:

We’ll be back later today with a post on Kate’s appearance at tonight’s Creative Industries GREAT Campaign reception, we expect a semi-formal look.