The three-minute-12 second long trailer, which was launched on August 13 and currently boosts 2,101,254 views so far, oozes freshness and fun of a modern-day romance.
Alia, 22, took to Twitter to share her excitement on film's new achievement.
"More than 2 million views in less than 48 hours! Feel like giving you all a shaandaar kiss. Hehehe #Shaandaar," she tweeted.
In the film, Shahid is playing a wedding planner, Jagjinder Joginder, who is organising the marriage function of Alia's sister.
The 34-year-old newly married actor re-tweeted a post shared by Alia on reaching the milestone.
"Aaaaah this is the #fastestshaandaarmillion! Wohooo thank you all you lovely lovely people #Shaandaar22ndOct," the tweet read.
"Shaandaar" is directed by "Queen" helmer Vikas Bahl and co-produced by Phantom Films, Karan Johar's Dharma Productions and Fox. It will hit theatres on October 22.
