Princess Kate was spotted on the dance floor at her brother James Middleton's wedding.

James Middleton posted a photo with his mother Carole in honor of Mother's Day.

Fans claimed to have seen Princess Kate dancing in the background of the snap.

They claimed that the woman in the short-sleeved white gown is Kate Middleton.

Kate Middleton and Prince William traveled to the south of France with their children to attend James Middleton's wedding in September 2021.

The wedding was held at a stunning chateau.

The couple exchanged vows in front of family and close friends.

Guests included Princess Eugenie and her husband Jack Brooksbank.

The event was reportedly an intimate affair with only close friends and family in attendance.