Melanie Chisholm and Charlotte Church are encouraging fans to clear out their closets to raise money for a British cancer charity.
The singers are asking clothes hoarders to raid their wardrobe and donate any unworn outfits to this year's (12) Give Up Clothes for Good campaign benefiting Cancer Research UK.
In ads for the fundraiser, Church can be seen dumping two trash bags filled with garments outside her front door, and Chisholm wears a glamorous red evening gown while busking on a street with her guitar.
British pop star Alexandra Burke has also transformed into a classical singer performing with an orchestra for the appeal, which is sponsored by British discount chain TK Maxx.
The fundraiser has pulled in $16 million (£10 million) since its inception in 2004 and the stars are hoping to generate a further $4 million (£2.5 million) this year.