The 'Quantico' star took to Instagram to express her delight and congratulate her close friend 'Meg'.
"Congratulations to my girl @meghanmarkle and Prince Harry!! I'm so happy for you Meg! You deserve the best always..keep smiling that infectious smile. Xoxo," wrote the 'Baywatch' star.
Priyanka has been touted as a potential bridesmaid when Markle ties the knot with Prince Harry next spring.
The two first met at a party in Toronto, Canada - where Meghan filmed 'Suits' - two years ago.