Kate is in bloom wearing pretty Philip Treacy hat at Trooping the Colour

The Duchess of Cambridge had all eyes on her Saturday morning (June 11) as she wowed with her chic ensemble while attending the annual Trooping the Colour ceremony. While we loved the white Alexander McQueen coat that she previously wore to her daughter Princess Charlotte’s christening, it was the Philip Treacy hat that caught our eye.

A new headpiece for Kate, the stunning accessory was tilted and featured a beautiful flower beneath the brim.

TAP TO VIEW FULL GALLERYKate looked pretty in pink

Making sure the hat took centre stage, Kate kept her glossy locks in a chic chignon.

At Princess Charlotte’s christening, Kate had chosen to pair the elegant Alexander McQueen coat with a white pillbox hat.

Both looks were beautiful but Saturday’s Philip Treacy number really gave the simple coat a serious dose of sophisticated chic.

The royal paired the Philip Treacy hat with a recycled white Alexander McQueen coat

It wasn’t just Kate’s outfit that had tongues wagging, as the Queen surprised fans by arriving in a bright-green ensemble. It was a departure from Her Majesty’s usual style, as she favours pastel hues.

Saturday marked the Queen's official birthday and this year was extra special as the monarch turned 90.

She was supported by members of her family including her husband Prince Philip, who celebrated his 95th birthday the day before.

Trooping the Colour takes place every year on a Saturday in June at Horse Guards Parade. The impressive display of pageantry begins with the Queen inspecting the troops, including her personal troops, the Household Division.

The colours, or flags, of the battalion are carried – in other words trooped – down the ranks. This year the Queen's Colour of the Number 7 Company Coldstream Guards is being trooped.

HELLO! Canada magazine is available for your tablet and smartphone. Get HELLO! Canada, PEOPLE, Vanity Fair and over 100 more of the world’s best magazines for one low monthly price at Texture by Next Issue. CLICK HERE to sign up for a free trial.