Did the Duchess of Cambridge wear white to Meghan Markle's wedding?

Kate, the Duchess of Cambridge, foreground left and Jessica Mulroney arrive with the bridesmaids for the wedding ceremony of Prince Harry and Meghan Markle at St. George’s Chapel in Windsor Castle in Windsor, near London, England, Saturday, May 19, 2018. (Jane Barlow/pool photo via AP)

Meghan Markle’s dress isn’t the only major fashion moment at the royal wedding. On Saturday, the Duchess of Cambridge made her first official public appearance since welcoming her third child, Prince Louis.

The 36-year-old arrived at her brother-in-law’s wedding wearing a wool silk tailored coat by Alexander McQueen.

Kate Middleton and Princess Charlotte after the wedding of Prince Harry and Meghan Markle at Windsor Castle. (Photo: Andrew Matthews/PA Wire)

She’s also sporting a hat designed by Philip Treacy and shoes by Jimmy Choo.

The Duchess of Cambridge at St. George’s Chapel for Prince Harry and Meghan Markle’s wedding. (Photo: Getty Images)

In her typically tactful style, the Duchess of Cambridge’s outfit carefully walked the line between being notably chic yet understated enough not to upstage the bride.

However, many on Twitter thought that her primrose yellow look was actually white and called her “rude.”

For all things royal wedding, from details on Meghan Markle’s dress to cute pictures of Prince George and Princess Charlotte, click here. Want to relive every moment? Watch it all here.