LONDON, United Kingdom — An unprecedented peek into Queen Elizabeth's royal wardrobe is taking place this summer at Buckingham Palace.

As part of the monarch's 90th birthday celebrations, the Royal Collection Trust announced Monday that visitors will be treated to a special exhibition of the queen's outfits, entitled: "Fashioning a Reign: 90 Years of Style from The Queen's Wardrobe."

The exhibition will feature a wide range of clothes from the queen's childhood to the present day, including ball gowns and military regalia.

The display will also include the outfit designed by Angela Kelly and worn by the queen and for the wedding of Prince William and Kate Middleton in 2011.

A total of around 150 outfits will be shown, with similar displays taking place at the Palace of Holyroodhouse and Windsor Castle.