Kate steps out in Stella McCartney and Smythe for outing with Prince George

The Duchess of Cambridge, née Kate Middleton, stepped out in some of her favourite wardrobe staples on Friday (Jul. 8), as she accompanied Prince George on his first official engagement in the United Kingdom.

Kate paired her stylish cobalt blue Stella McCartney dress with a navy blue blazer by Canadian design duo Smythe. The Duchess had previously worn the vibrant shift dress to watch the tennis matches during the 2012 Olympics and the perfectly tailored blazer en route to Canada in 2011.

TAP FOR GALLERY The Duchess of Cambridge attended the Royal International Air Tattoo.

Guests at the Royal International Air Tattoo were thrilled to catch a glimpse of the young royal, who turns three on July 22. George was dressed in a short sleeved white shirt and navy shorts, and appeared in awe of the aircraft as he was carried along in his mother's arms.

Kate recycled a cobalt blue Stella McCartney dress from 2012.

The Duchess of Cambridge has been looking better than ever in recent weeks after making a number of unexpected style choices, including the stunning cream off-the-shoulder Barbara Casasola dress she wore for a dinner at the Natural History Museum on Wednesday.

THE REASON WHY KATE IS LOOKING BETTER THAN EVER

The outfit was hailed as Kate's most fashion-forward look to date, and marked the latest in a long line of stylish ensembles from designers including Dolce & Gabbana, Missoni and Roland Mouret.

The Duchess topped off the look with a Smythe blazer.

Kate once again turned heads as she made her long-awaited appearance at the Wimbledon women's semi-finals on Thursday, wearing a yellow Roksanda Ilincic dress that she had previously worn on her royal tour of Australia in April 2014.

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