Mumbai, June 18 -- Filmmaker Karan Johar is full of praise for Alia Bhatt and Sharvari's upcoming spy action thriller 'Alpha' trailer, already declaring the film a "blockbuster."

In an Instagram story, Karan reshared the trailer of 'Alpha' and hailed the power-packed performances by the leading ladies, along with their co-stars Anil Kapoor and Bobby Deol.

"This rock and roll actioner screams GIRLPOWER in the best way. @allaabhatt and @sharvari are on a mission to Block a Buster! OG energy with @anilskapoor and @iambobbydeol! Shiv Rawall makes his bada screen debut with a BANG! Pave the way @yrf! You are the mega creators of this mazedaar universe!!!" Karan wrote.

The brand new trailer of 'Alpha' has received high applause from many, in...