Meet Europe's other royals: Pregnant Princess Sofia of Sweden leads glam guests at Royal Palace in Norway
It's been a busy month for royal birthdays.
Between Britain's Princess Charlotte turning two and The Netherlands' King Willem-Alexander marking his 50th birthday, it's been a particularly busy week for European royals.
To continue the lavish celebrations, Norway's King Harald and Queen Sonja celebrated their milestone 80th birthdays at the Royal Palace in Oslo for a glamorous affair on Tuesday night.
Princess Sofia of Sweden, who is expecting her second child with husband Prince Carl Philip this summer, added new meaning to maternity chic in a navy embellished gown with empire waist as she entered the party alongside the Bernard Mach and our new favourite royal - Princess Tatiana of Greece in an emerald, off the shoulder gown.
Desirée Kogevinas opted for a Grecian-style red asymmetric gown with a gold crown alongside Madeleine Kogevinas of Sweden injected some colour.
Crown Princess Mary of Denmark stunned in a tiered champagne nude gown as she was accompanied by Prince Albert of Monaco.
Seriously, check out that diamond tiara.
Queen Anne-Marie of Greece and princess Mabel of Oranje-Nassau from the Netherlands chose for classic elegance in their ensembles.
And finally, the couple or the hour - King Harald and Queen Sonja of Norway in a dress that might be the definition of 80th birthday party dress goals.