Kate Middleton may be the Duchess of Cambridge and new mom to a new princess, but her siblings, Pippa and James Middleton, deserve some time in the spotlight too!

Pippa, 31, and James, 28, completed the London to Brighton Bike Ride on Sunday, cycling 54 miles from England's capital to the coastal town to raise money for the British Heart Foundation.

Sporting matching red tops and cycling shorts, the siblings sported huge grins as they completed the race.

"As a keen cyclist, I am thrilled to be involved in this milestone year of the London to Brighton Bike Ride," Pippa told the research organization earlier this year. "This event is testament to the fact that cycling is such a great inclusive sport that everyone can enjoy and at the same time, through the money raised, it continues to help millions of people affected by heart disease."

Last year, the pair traveled 3,000 miles across the United States with a team of eight cyclists for Race Across America, which also benefited the same charity. 

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As her brother and sister cycle for a good cause, new mom Kate has been spending some quality time with Prince George, 2, and her newborn baby girl, Princess Charlotte.

The Duchess stepped out for her first official appearance since welcoming her daughter at the annual Trooping the Colour celebration to mark the Queen's 89th birthday in London on June 13.

Can you believe Kate looks this amazing just six weeks after giving birth? Check out more pics of the Royal Family below!