The 24-year-old is excited about her association.
"I'm keen to create a new era where all Indian women will take pride in being a woman," Anushka said in a statement.
She has shot a television commercial for the brand, and says: "I wish to convey to every girl out there that she should no longer be worried about staining."
"Also through this association, I would like to introduce to them a product which is revolutionary in its own way and brings to the consumer an extension of comfort that helps them lead an active life," she added.
Prachi was named the brand ambassador for SOFY in July 2011.