It has come up with a campaign titled "SAIR" featuring the "Murder 3" actress and Singh, who has styled celebrities like John Abraham and Jimmy Sheirgill.
The campaign presents the latest bridal and festive collection and has amalgamated runway trends in its exclusive line put together by various designers.
Sara is seen in lehengas, anarkalis and saris by designers like Siddartha Tytler, Sonal Koradia, Gauri & Nainika and Arpita Mehta.
Singh, on the other hand, flaunts his creations like Nehru jackets and sherwanis.
"DVAR's latest campaign encompasses the journey of a bride and will highlight beautiful designer options for all the ceremonies right from a formal meeting with the family to an eventual reception," Vijayta V Gandhi, joint MD, DVAR, said in a statement.
The campaign goes live Oct 1 on every platform - social media, print and hoardings.
Parth Sanghavi, co-founder, said: "Besides bridal, we have introduced our festive line which includes beautiful anarkalis and straight suits that can be worn for Diwali and other occasions."