Prince Nicolas of Sweden: The little royal's most adorable photos

With those adorable blue eyes and charming grin, there is no doubt that Sweden's Prince Nicolas has been a favorite of royal watchers since his arrival in 2015. Here is a look at all of the little Prince's photos to date. Photo: Getty Images

Happy third birthday! Princess Madeleine and Chris O'Neill's middle child celebrated his birthday with a new portrait that showed off his baby blues. His eyes were the only thing 'baby' about him as Prince Nicolas looked all grown up in a white button down short-sleeved shirt. Madeleine, 36, took to her personal Instagram account to share the image. Alongside the photo, she wrote, "Our sweet Nicolas turns 3 today!" adding a balloon and cake emoji.Photo: Erika Gerdemark Kungahuset.se / The Royal Court, Sweden

With his third birthday quickly approaching on June 15, the adorable toddler looked all grown up at his little sister Princess Adrienne's christening on June 8, 2018. Photo: Getty Images

After becoming the middle child, Princess Madeleine shared this photo of Nicolas, big sister Leonore and their newest addition Adrienne on March 11, 2018.Photo: Instagram/@princess_madeleine_of_sweden

Breaking hearts since 2015! Prince Nicolas and Leonore were extra festive for Valentine's Day 2018.Photo: Facebook/Princess Madeleine

A month after his second birthday, Prince Nicolas matched his mom during aunt Crown Princess Victoria's 40th birthday. The little Prince held on tight to his toy race car.Photo: Getty Images

Those piercing blue eyes were on full display as Nicolas celebrated his second birthday on June 15, 2017. In several photos released by the palace and Princess Madeleine, he posed in a matching blue shirt in front of a cake and a number two candle. Photo: Kate Gabor, The Royal Court, Sweden

The young Prince, who was born two days after his maternal uncle Prince Carl Philip and aunt Princess Sofia’s 2015 royal wedding in Stockholm, look bright-eyed at his candles. His mom opened up earlier this year about her son’s love for books telling the Expressen, “[Nicolas] has always loved books! So when you cannot find him, then he’s sitting with a little book himself, up and down, like he was trying to look into it. It’s very fun, so he will probably be a bookworm!”Photo: Kate Gabor, The Royal Court, Sweden

The little boy's proud mom Princess Madeleine shared a gorgeous set of photos on her Facebook account, showing Nicolas smiling as he prepares to blow out his birthday candle. "Happy 2nd Birthday Sweet Nicolas!" wrote Madeleine. "We couldn't have wished for a kinder and warm-hearted boy." Photo: Kate Gabor, The Royal Court, Sweden

In March 2017, the little Prince enjoyed a pre-spring ice cream treat in this snap shared by his mom Princess Madeleine on Facebook.Photo: Facebook/Princess Madeleine Of Sweden

Nicolas was bundled up as he played in the snow during a family ski holiday in Switzerland over the holidays.Photo: Facebook/PrincessMadeleineOfSweden

The young Prince posed on a balcony in front of a scenic view of the Swiss Alps.Photo: Facebook/PrincessMadeleineOfSweden

It was "love at first sight," or at least that's what Princess Madeleine captioned a sweet photo of her son Prince Nicolas. The royal tot got up on his tippy toes at a stable to caress the snout of a friendly horse.Photo: Facebook/Princess Madeleine of Sweden

Nicolas was a little restless – but extremely cute! – while cuddled in his father's arms during the christening of his cousin Prince Oscar in September 2016. Photo: Getty Images

Watch out David Beckham! Prince Nicolas showed off his soccer talents in August 2016.Photo: Facebook/PrincessMadeleineOfSweden

Prince Nicolas celebrated his first birthday with brand new portraits, his blue eyes perfectly matching his blue shirt.Photo: Facebook/Kungahuset

Princess Madeleine showed off her little man as she wished her followers a happy Mother's Day in May 2016.Photo: Facebook/PrincessMadeleineOfSweden

A few months shy of his first birthday, Prince Nicolas showed off his gummy smile for his mom.Photo: Facebook/PrincessMadeleineOfSweden

Prince Nicolas' first meeting with Santa went off without a hitch in December 2015.Photo: Facebook/PrincessMadeleineOfSweden

The little boy slept in his mother Princess Madeleine's arms while his father waved to the crowd outside of Nicolas' christening ceremony. Photo: Getty Images

Nicolas rested in his mother's arms during a photo shoot outside of their home in 2015. Photo: Facebook/Kungahuset

Ready for his close up: Prince Nicolas made his debut in his official portraits on the day after his birth on June 15, 2015. Photo: Getty Images