Royals Prince Alexander of Sweden Is Mom Princess Sofia's Mini-Me in New Birthday Portraits It's Prince Alexander's first birthday since the family welcomed another baby boy, Prince Julian By Stephanie Petit Stephanie Petit Stephanie Petit is a Royals Editor, Writer and Reporter at PEOPLE. People Editorial Guidelines Published on April 19, 2021 02:21PM EDT Share Tweet Pin Email Prince Alexander; Princess Sofia of Sweden. Photo: Prince Carl and Princess Sofia Sweden/Instagram; Victor Ericsson Kungl. Hovstaterna/The Royal Court of Sweden Prince Alexander of Sweden is 5 — and looking more like his mother, Princess Sofia, every day! The Swedish royal family shared brand new portraits of Prince Alexander to mark his birthday on Monday, and royal fans couldn't help but recognize that the little prince looks just like his mother. The two share a shy smile and a sweet twinkle in their eyes. "Today we celebrate our charming, curious and mischievous 5-year-old," Princess Sofia and Prince Carl Philip captioned two new photos of their birthday boy on Instagram. Princess Sofia Shares Photos of Her '4 Beautiful Princes' — Including Newborn Son Julian Prince Alexander, who was already a big brother to 3-year-old Prince Gabriel, is celebrating his first birthday since the family's newest addition: his baby brother, Prince Julian! Get the premiere issue of PEOPLE Royals for glamorous new photos and inside stories royals fans haven't seen or read elsewhere! Subscribe at peopleroyals.com/launch Princess Sofia, 36, and Prince Carl Philip, 41, shared the very first look at Prince Julian on March 28, just two days after his birth — a solo shot of the baby laying on a white sheet and dressed in a white sweater. Sofia later shared two photos, including a portrait of the new baby with his father and two older brothers. "Life has given me not only one, but four beautiful princes," Sofia captioned the black-and-white images on Instagram. "A sincere thank you from us for all the warm congratulations in connection with Julian's arrival." Can't get enough of PEOPLE's Royals coverage? Sign up for our free Royals newsletter to get the latest updates on Kate Middleton, Meghan Markle and more! Sofia also shared a photo of her three sons in which Prince Julian has Alexander's thumb in his mouth as Alexander and Gabriel smile at their little brother.