Tiara Thursday: The Tiaras of Norway's 2007 Royal Birthday Celebration

Another royal birthday gathering fast approaches! King Harald V and Queen Sonja of Norway both turn 80 this year, Harald in February and Sonja in July. They're holding a joint celebration on May 9th and 10th. May 9 will include a gala dinner at the palace, and May 10 will include a dinner thrown by the government.

Between 30 and 40 foreign royal guests are expected, according to advance reports. Confirmed guests thus far include King Philippe and Queen Mathilde from Belgium; Queen Margrethe, Crown Prince Frederik, and Crown Princess Mary from Denmark on both days, with Prince Joachim and Princess Marie joining on the second day; and King Carl Gustaf, Queen Silvia, Crown Princess Victoria, Prince Daniel, Prince Carl Philip, and Princess Sofia from Sweden.

A similar celebration occurred in 2007, when the party at the palace was a full on sparkling tiara affair. As we approach this year's festivities - and keep our fingers crossed for some more tiara fun - let's take a look at the tiara rundown from that event. (As always, we've covered most of these tiaras in the past, and clicking on their names will take you to their full stories.)

Bjørn Sigurdsøn, DKH

Norway's big gun emerald tiara set the tone, flanked by diamonds from Sweden and Luxembourg. We've previously discussed some of the dresses on display here.

• Queen Silvia of Sweden: Nine Prong Tiara
• Queen Sonja of Norway: Empress Joséphine's Emerald Tiara
• Grand Duchess Maria Teresa of Luxembourg: Diamond Vine Leaves Tiara, with the base of the Chaumet Diamond and Pearl Choker Tiara as a necklace

Bjørn Sigurdsøn, DKH

An heir photo would look a bit different today, huh? In tiara options, too. We've previously discussed some of these gowns here.

• Queen (then Princess) Mathilde of the Belgians: Mathilde's Laurel Wreath Tiara
• Crown Princess Victoria of Sweden: Baden Fringe Tiara
• Crown Princess Mette-Marit of Norway: Diamond Daisy Tiara
• Crown Princess Mary of Denmark: Mary's Wedding Tiara
• Queen (then Princess) Máxima of the Netherlands: Antique Pearl Tiara

Bjørn Sigurdsøn, DKH

And even more! Click the above pic to enlarge, and come along on a tiara-hunting expedition:

• Countess Ruth of Rosenborg: Rosenborg Kokoshnik Tiara
• Princess Astrid of Norway: Vasa Tiara
• The Princess Royal: Meander Tiara
• Princess Märtha Louise of Norway: King Olav's Gift Tiara
• Queen Anne-Marie of Greece: Greek Emerald Parure Tiara
• Princess Désirée of Sweden: Queen Louise's Diamond Tiara
• The Duchess of Gloucester: Gloucester Honeysuckle Tiara with pink topaz centerpiece
• Infanta Cristina of Spain: Spanish Floral Tiara
• Princess Mabel of Orange-Nassau: Diamond Sunburst Tiara
• Princess Laurentien of the Netherlands: Queen Emma's Diamond Tiara with ruby centerpiece
• Princess Madeleine of Sweden: Modern Fringe Tiara
• Princess Astrid of Belgium: Savoy-Aosta Tiara
• Lady Elizabeth Anson: A diamond tiara from her mother, Princess Anne of Denmark
• Princess Christina of Sweden: Queen Sophia's Diamond and Pearl Tiara
• Princess Alexia of Greece: Alexia's Diamond Tiara
• Princess Alexandra of Sayn-Wittgenstein-Berleburg: Princess Benedikte's Floral Tiara

Now that's how you celebrate a birthday, right?! We can't make any guarantees about what we might see this year, but the field is wide open for your wild guesses...