Giving her own twist to the trend, the actor-turned-politician posted a picture from her 'Kyunki Saas Bhi Kabhi Bahu Thi' days, as an aged Tulsi Virani.
Sharing the picture, she wrote, "#When @ektaravikapoor gets to you before the #faceappchallenge #tbt."
Kapoor, who continues to be good friends with Irani, replied to the post, saying, "....and u do it like a boss!!! It was d third leap na."
Irani's post left her fans in splits, with users leaving comments like "The OG of faceapp challenge" and "And she did it best!!!" on her post.
FaceApp has taken the Internet by storm, with social media flooded with photos featuring old and wrinkled faces of young people.
Welcome To Parliament! Smriti Irani, Gambhir, Sunny & Others Who Took Oath As New MPs
All Hail The New MPs
India's 16th Lok Sabha polls were high on drama, excitement and stardom. From top actors and singing icons to sports aces, an array of celebrities joined the political race this year, and some succeeded in making it to Parliament.
Weeks after Prime Minister Narendra Modi and his cabinet took the oath of office at the Rashtrapati Bhawan, it was the turn of newly-elected members of Parliament to sign up. On Monday, the new MPs - some making their debuts while others doing an encore - were sworn-in as members of the 17th Lok Sabha.
From Gautam Gambhir to Sunny Deol and Babul Supriyo, here's a peek at all the celebrities who took the oath to the 17th Lok Sabha.