The silk and satin garment, a replica of the original christening robe commissioned by Queen Victoria, will be part the "Royal Childhood" exhibition that the public can see at the London palace.
"Royal Childhood" will tell the story of life as a young member of the royal family at Buckingham Palace. The exhibition will also feature toys that belonged to a young Queen Elizabeth II and her late sister, Princess Margaret, including a tea set, rocking horse and doll's carriage. There will also be a recreation of the kitchen from Y Bwthyn Bach (the "Little House"), a miniature thatched cottage that was given to the queen by the people of Wales in 1932, when the then-Princess Elizabeth was 6 years old.
"From well-loved dolls to rocking horses, rattles and outfits, visitors to the palace this summer will see over 100 items that span more than 250 years of royal childhood, many on display for the first time," said the exhibition's curator, Anna Reynolds of the Royal Collection Trust, according to the Guardian.
In 2011, the Alexander McQueen gown worn by Kate, Duchess of Cambridge, for her wedding to Prince William was part of an exhibition that drew a record number of visitors to the palace.
"Royal Childhood" can be seen when Buckingham Palace opens to visitors from July 26-Sept. 28. Click through the gallery above to see some of the items from the exhibition.