Mr Murugadoss shared a Dubsmash video of the Tevar actress on micro-blogging website Twitter, where she was seen voicing a dialogue of southern superstar Rajnikanth.
The Kaththi director wrote on Twitter
Lady Rajini of Mumbai pic.twitter.com/KDrLgfNf1X? A.R.Murugadoss (@ARMurugadoss) May 20, 2015
Akira, which is being produced by Fox Star Studios, is a thriller and is the Hindi remake of 2011 Tamil hit Mounaguru. The film also co-stars Sonakshi's father Shatrughan Sinha.
Akira is Mr Murugadoss's third Hindi venture after the back-to-back hits Ghajini and Holiday: A Soldier Is Never Off Duty.