Meghan Markle is reacting to Prince Harry's surprise appearance at the St. Regis World Snow Polo Championship in Aspen, Colorado, on Wednesday, Dec. 17. In an Instagram Story post, the Duchess of Sussex,

A highly public Christmas snub marked the 'final straw' between Prince Harry, Meghan Markle, and the royals, according to insiders.

Prince Harry, the Duke of Sussex, wore a vibrant blue pullover, a black helmet, white trousers, and black sunglasses as he rode on the back of a brown horse in Aspen, Colorado

Harry, 41, took part in the St. Regis World Snow Polo Championship in Aspen, Colorado, on Dec. 17, with photos showing him riding on horseback in polo gear. A spokesperson for the Duke of Sussex confirms to PEOPLE that he was standing in for a friend at the polo tournament.

Prince Harry was spotted hitting the slopes in Aspen, Colorado, with his pal Nacho Figueras in photos obtained by Hello! magazine. The 41-year-old, who grew up skiing in Switzerland with his mother, Princess Diana,

Prince Harry is the son of Charles, Prince of Wales and Princess Diana. He is married to American actress Meghan Markle and is sixth in line to the throne.

Prince Harry's made the comment to primatologist Jane Goodall, according to former magazine editor Tina Brown.

Prince William has appeared to push back against claims made by his brother Prince Harry and sister-in-law Meghan Markle that he "doesn't hug people", after warmly embracing a high-profile guest in a newly released video.