In Luxembourg today, Grand Duke Henri appointed his son, Prince Guillaume, as Lieutenant-Representative. This move paves the way for his abdication, following in tradition of other Luxembourg royals, while Henri remains the head of state.

Grand Duke Henri of Luxembourg on Tuesday appointed his son, Crown Prince Guillaume, as "lieutenant-représentant," or regent, thus initiating the transfer of duties and ultimately his succession to the role of head of state.

Tuesday marked a historic day for the Luxembourg royal family as Grand Duke Henri appointed his son, Prince Guillaume, as Lieutenant-Representative. As lieutenant representative, he will assume most of his father's constitutional powers, making it the first step for Grand Duke Henri's abdication.

Grand Duke of Luxembourg, 69, and his eldest son and successor, 42, will participate in a Lieutenancy Ceremony at the Grand Ducal Palace in Luxembourg. Voluntary abdication has become a pattern for the royal family of the world's wealthiest country,