• Today is Prince Alexander of Sweden's birthday
  • The Swedish royal turned 6 years old
  • See his new birthday portrait below

It's a big day in the Swedish Royal Family: Prince Alexander turns 6 today. The son of Prince Carl Philip and Princess Sofia celebrated his birthday, and the royal couple shared a must-see portrait.

Swedish Royals: Prince Alexander's new birthday photo

In translation from Swedish, Prince Carl Philip and Princess Sofia wrote to their son on Instagram: "Today our happy and wonderful son Alexander is 6 years old."

The cute portrait shows Prince Alexander with a mischievous smile on his 6th birthday. The little royal wears his hair long over a nice sweater.

Prince Alexander was born on April 19, 2016. As the son of Prince Carl Philip, he's fifth in line to the Swedish throne and holds the title of Duke of Södermanland.

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Alexander is the eldest of Carl Philip and Sofia's three boys. They also welcomed Prince Gabriel in 2017 and baby Prince Julian last year.

Happy birthday, Prince Alexander!