It started Tuesday and the singer's new paint job benefits BCA twofold, reports eonline.com.
Not only will USD 1 of each bottle of the nail paint sold go towards the Breast Cancer Campaign, if someone copies Knowles and posts about the dazzling tint on Instagram or Twitter, 16 more cents will be donated to the same charity.
The 32-year-old posted a photograph on image sharing website Instagram Tuesday, flaunting her newest manicure - a sparkling hot pink colour.
Photos: 'Dangal' girls Sanya Malhotra, Fatima Sana Shaikh's dinner outing
Photos: Salman Khan, Daisy Shah spotted at the Mumbai airport
Photos: Rakhi Sawant to play Honeypreet in Ram Rahim biopic
Photos: Arvind Kejriwal asks Kamal Haasan to join politics
Photos: TV actress who played goddesses on the small screen