Victoria Beckham is cleaning house for a good cause!

The fashion designer is auctioning off 25 of her three-year-old daughter Harper's gently-used designer outfits — including, tops and jeans, dresses with matching jackets and shoes — to benefit the UK's Save the Children charity.

"I am delighted to be supporting the wonderful work of Save the Children through the Fashion Saves Lives Sale," the mom-of-four, 41, said in an official statement.

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"As a mother, I passionately believe that all children, wherever they live, have the right to a happy, healthy life. Everyone out there can do their part by purchasing or donating, ensuring children all around the world have the opportunity of a brighter future," she added.

victoria beckham family

Victoria (center) with her children and husband, David.

According to E! Online, labels on some of the donated items include high-fashion designers Chloe, Ralph Lauren, Stella McCartney, Gucci and Marc Jacobs, among others.

All of the eBay sale's proceeds will benefit Save the Children's effort to end preventable child deaths by the year 2030.