I don't know about you, but H&M is probably the last place I think of when shopping for a ball gown. But in the case of Sweden's Crown Princess Victoria, she pulled off an old high street evening gown with a diamond tiara.

When the heir to the Swedish throne attended the Nobel Laureates Annual Dinner at the Royal Palace in Stockholm on Wednesday, December 11, she appeared in a design from H&M's conscious collection, but with her own twist.

Princess Victoria debuted the ruffled dress in one of her stunning 2020 10th anniversary portraits, but altered the navy design to incorporate a sheer short-sleeved overlay (the original piece was sleeveless). She also wore the $290 eco-friendly design to the 2022 event, showing it off for the third time at Wednesday night's Nobel Prize gathering.

What to pair with a low-budget ball gown? A pile of diamonds and a historic tiara, of course. Sweden's future queen wore Boucheron's Laurel Reese Tiara, which she inherited from her great-aunt Princess Lillian, who died in 2013.

But the sparkler actually has ties to the British royal family. The tiara was a gift in the early 1900s to Princess Margaret of Connaught, granddaughter of Queen Victoria, who later married King Gustaf VI Adolf of Sweden. Unfortunately, she died before her husband ascended the throne, but Margaret's tiara has been passed down through her daughter-in-law, Princess Lillian, and now Crown Princess Victoria.

The diamond piece resembles a two-row laurel wreath, with an open center from which the diamonds dangle. It can also be worn as a necklace, as Princess Margaret preferred. Victoria made her tiara even brighter, clasping it to her sash with dazzling drop earrings and a diamond necklace, as well as a huge brooch.

Crown Princess Victoria was not the only royal to make a glittering impression at the Nobel Laureate Dinner. Her mother, Queen Sylvia, her sister, Princess Madeleine, and sister-in-law, Princess Sophia, all wore their finest dresses and jewelry for the evening.

Wednesday was the second consecutive day that the Swedish royal ladies took out their tiaras; the family also attended the Nobel Prize ceremony on December 10. On this occasion, Victoria wore a sparkling pink dress with a sheer black overlay and chose one of her favorite headpieces, the Baden Fringe Tiara.