As the eldest son of the monarch, 76, and the late Princess Diana, it's no surprise that the Prince of Wales is gearing up to take over the reins as future king.

Prince William stepped out for a significant solo outing as he joined forces with big names to champion a major cause close to his heart.On Wednesday, Kensington Palace shared an update on

While everything seems to be copasetic between Prince William and King Charles —the monarch's drama is primarily with his younger brother, Prince Andrew, and his other son, Prince Harry —the king and future king have a little healthy competition going.

While there's been a lot of press about King Charles' rift with Prince Harry, it seems there may also be tension in his relationship with Prince William.