The remaining category, the 10 "co-opted" senators, are elected by the first two groups of senators. The princes and princesses of the royal line are also members of the Senate—currently Prince Phillippe, Prince Laurent, and Princess Astrid. | The remaining category, the 10 "co-opted" senators, are elected by the first two groups of senators. The princes and princesses of the royal line are also members of the Senate—currently Prince Phillippe, Prince Laurent, and Princess Astrid. |