The trailer of the movie shows Shahid as a muscular action hero, while Sonakshi plays his love interest.
"Morning all. Last two days of 'R...Rajkumar'.. This ones been so much fun. So many memories," Shahid posted on Twitter on Wednesday.
Sonakshi will complete her part Wednesday and tweeted, "It's my last day shooting for 'R...Rajkumar'.. Nahin (No)! Think I'm having a panic attack. Uh oh."
The movie also stars Sonu Sood and will hit theatres on December 6.
Photos: Kareena Kapoor Khan and Aamir Khan at Mumbai airport
Photos: SRK, wife Gauri, Aishwarya Rai, Shweta Bachchan at Vogue Awards
Photos: Harbhajan Singh-Geeta Basra's TV outing with daughter Hinaya
Photos: Malaika Arora flaunts ripped jeans like a boss!
Photos: Vaani Kapoor, Kriti Sanon, Dia Mirza sizzle on the ramp