Alexandra Kim, left, curator of the Royal Ceremonial Dress Collection, and conservator Maria Jordan, right, hold a pair of bloomers and matching chemise Tuesday that once belonged to Britain’s Queen Victoria.

London ? A set of roomy bloomers that once belonged to Queen Victoria are back in royal drawers.

The underwear — which has a 56-inch waist — has been added to Britain’s Royal Ceremonial Dress Collection at Kensington Palace. The undergarments have a matching chemise, are embroidered with a “VR” and are believed to date from the 1890s.

Queen Victoria had a 20-inch waist as a young woman. But curator Alexandra Kim said Tuesday that “over the years, particularly having given birth to nine children, that changed entirely.”

The collection purchased the bloomers for $993 earlier this summer. Kim said it’s likely they were handed down to a servant after the monarch’s death.

There are about 12,000 items in the collection, housed at Kensington Palace in London. It includes photographs, prints, sketches, diaries — and famous outfits.

Among the sartorial treasures are the tweed suit made for the 1981 honeymoon of Princess Diana, a safari suit sported by Edward VIII — later the Duke of Windsor — and a silk waistcoat worn by King George III before his death in 1821.

Some of the 12,000 items — though not Victoria’s bloomers — are on display.

Queen Victoria lived from 1819 to 1901. She became queen at age 18 and was Britain’s longest-reigning monarch.