If you thought Amitabh Bachchan and Hrithik Roshan impromptu picked up Shah Rakh Khan from the front row during their recent ramp foray in Mumbai, hold on. The latter's presence was on a special request to the two stars from none other than Karan Johar.

Big B and Hrithik walked the platform as showstoppers for filmmaker-designer Karan Johar and Varun Bahl's show at the HDIL-India Couture Week Thursday, however, it was King Khan who stole the show with a non-scripted jig on the runway with the other two stars.

Megastar Amitabh has explained on his blog what actually prompted them to invite Shah Rukh on the ramp.

"...The audience is in raptures and their decibels are matching the base equalized output from a music system that is shaking the windows miles away!

Back to where we started, pick up Hrithik from the wings and walk again to the top, turn around and welcome the designers, walk along with them through applause, turn around... Now listen to the guidelines of director designer Karan Johar, who wishes that we pick up Shah Rukh from the front row, Ok done, " Amitabh posted on his blog.

"He (Shah Rukh) sits among all the beautiful guests and is reluctant at first, but succumbs and adds to the three of now walking K3G ('Kabhi Khushi Kabhie Gham') style up to the ramp where SRK decides to make life easier.

"He announces that the three of us would dance to each ones favored style. So we do a Bachchan first, then a Hrithik and finally the remaining on SRK's style... We do our bit and happily walk back in to the sun set. All hell breaks lose then, " he added.