Princess Estelle of Sweden and her baby brother Prince Oscar look adorable in new a new portrait released by the Royal Palace on the occasion of the country’s National Day on Monday. The big sister dotes on her baby brother in the new picture. The kids of Crown Princess Victoria and Prince Daniel wished the entire nation via the picture.

The picture shows four-year-old Estelle dressed in the traditional blue and yellow national day dress. It is customary of all the female Swedish royals to wear the dress for the celebration. Estelle has her arms wrapped around her baby brother, while smiling at the camera.

She cradles Oscar, and gently rests her head on his. The photoshoot took place in the grounds of the family’s home Haga Palace. The baby prince looks cute in a pale blue romper.

Another picture shows Estelle running around the palace gardens, playing with sheep and gently patting one on its back. The little princess also carries a basket in one hand. Her blonde hair is tied into a ponytail with a white bow. She wears black buckled shoes and white lacy socks.

In another picture Victoria sits on the ground holding her baby son, while Estelle stands next to her giggling and talking. The Swedish heir apparent wears a white dress and a wide-brimmed straw hat. Her mini-me daughter wears a matching frock and a similar summer hat.

Estelle, who is second-in-line to the throne, is dressed in a pale blue striped summer dress with cap sleeves. It is baby Oscar’s first official portrait. In one close up shot, Oscar is seen in the arms of his mom with his hand in his mouth, staring at the camera.

Sweden celebrates national day every year on June 6. Members of the royal family lead the festivities, which begin in the morning with the opening of the palace gates. The public are then invited to tour the royal residence.