In the 30-seconds teaser of the song titled Mera Naam Mary, Kareena is seen in a seductive avatar, shimmering in a silver outfit.
"Here’s the exclusive teaser of #MeraNaamMary from @Brothers2015. Enjoy!," Akshay, 47, posted on twitter.
The action-drama has been directed by Karan Malhotra and is an official remake of the 2011 Hollywood film Warrior.
Besides Akshay, Brothers also stars Sidharth Malhotra, Jacqueline Fernandez and Jackie Shroff.
The movie will hit theatres on August 14.