Kylian Mbappe's long-awaited move to Spanish powerhouse Real Madrid finally became official on Monday, June 3, after years of negotiations and speculations.

One figure's message stood out among the excitement around the Spanish capital.

Cristiano Ronaldo, Real Madrid's all-time leading goalscorer and one of Mbappe's childhood heroes, gave words of encouragement to the Frenchman.

"My turn to watch. excited to see you light up the Bernabéu. Hala Madrid!," the Portuguese commented on Mbappe's first post on Instagram as a Real Madrid player.

Mbappe's announcement post of his move across all his social media platforms included photos of him as a child touring around Real Madrid's facilities, and one photo was with Ronaldo himself.

Cristiano Ronaldo is Kylian Mbappe's favorite player growing up

Mbappe made it known when he first signed with Paris Saint-Germain as a 19-year-old in 2017 that Ronaldo was his childhood idol.

However, he also said that it has "ended," in the context that he is no longer intimidated by big-time players anymore.

"Cristiano was my idol when I was young and it was great to meet him when I went to (Real's training ground) Valdebebas. I adored him when I was young but that ended," the 2022 FIFA World Cup Golden Boot winner stated.

A viral photo of Mbappe as a child has circulated on social media for years, showing several Ronaldo posters all over his room.