Royal Wedding 2018 - Prince Harry and Meghan Markle: Third time lucky for Kate's recycled wedding outfit

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge and Prince George leave St George's Chapel. Photo / Getty Images

The Duchess of Cambridge has nailed her royal wedding look at her first public outing since the birth of Prince Louis last month.

Kate Middleton arrived late to the church, just ahead of the bride, as she was helping manage the bridal party of ten children, including Prince George and Princess Charlotte outside.

Kate and Charlotte leaving the chapel. Photo / Getty Images

She wore a primrose yellow wool silk tailored coat by Alexander McQueen - the same designer she wore for her own wedding in 2011. It was matched with a Philip Treacy hat and shoes by Jimmy Choo.

However style spotters were quick to point out she had worn that outfit before - twice. It was first worn for the christening of Princess Charlotte back in July 2015, and also at the Queen's birthday celebrations in June 2016.

Kate Middleton in 2015 at the christening of Princess Charlotte. Photo / Getty Images

The Duchess stepped into the church just minutes ahead of the bride herself, in a stunning modern Givenchy dress.

The Queen and Prince Philip were also last to arrive before the bride, in keeping with royal protocol that dictates those most senior arrive last.

Kate wearing the same outfit in 2016. Photo / Getty Images

The Queen wore a flared dress in lime, lemon, purple and grey printed silk by favoured designer Stuart Parvin and entered the church to a fanfare. The Duke wore a morning suit and it's the first time he's been spotted in public since a recent hip operation.

Prince Charles, Prince of Wales, Camilla, Duchess of Cornwall, Catherine, Duchess of Cambridge, Prince Andrew, Duke of York and Princess Beatrice at Windsor Chapel. Photo / Getty Images

Camilla, the Duchess of Cornwall wore an ice pink silk marocain asymmetrical coat dress from designer Anna Valentine. Meghan's mum, Doria Ragland wore a custom dress and day coat designed by creative directors of Oscar de la Renta, Fernando Garcia and Laura Kim.