Priyanka, 33, who is currently shooting for 'Baywatch', took to Twitter to heap praise on Kangana as she won the best actress award for portraying a double role in 'Tanu Weds Manu Returns'.
Kangana has already won a best actress National film award for 'Queen' and best supporting actress honour for 'Fashion'.
"Congratulations to #KanganaRanaut Such a well deserved win! You r a undeniable powerhouse lady!! Much love always..," wrote Priyanka, who had won a national award for playing a model in 'Fashion'.
The former Miss World extended her warm wishes to other national award winners including Amitabh Bachchan, her 'Bajirao Mastani' director Sanjay Leela Bhansali, co-star Tanvi Azmi and the film's choreographer Remo D'Souza among others.
"Congratulations @SrBachchan for the national award.. For consistently teaching us about flawless performances. Much admiration always," she wrote.
"Soooo Proud of this epic team! Best Choreographer:Remo D' Souza Best Cinematography:Sudeep Chaterjee. Best Production Design:Bajirao Mastani.
"And last but not the least!! Team #BajiraoMastani Sanjay sir!!You brought us all together for greatness!Congratulations and party hard tonight!!" Azmi shaved her head to play the mother of Bajirao.
"Congratulations @tanviazmi you brought life to Radha maa.. And sacrificed your hair! What a well deserved award!You are my Hero! #BajiraoMastani."
Priyanka also congratulated her 'Kaminey' and '7 Khoon Maaf' director Vishal Bhardwaj for his win in the best adapted screenplay category.
"Congratulations Vishal sir... This is number 7!!! Unquestionable talent. So proud to have worked under you. #talvar #vishalBharadwaj," she wrote.