Stating that it was a light-hearted tweet, Congress leader Shashi Tharoor on Sunday apologised for using Miss World Manushi Chhillar's surname as a pun in a tweet against demonetisation. Taking a dig at the BJP-led Centre's demonetisation drive, he had earlier tweeted, "BJP should have realised that Indian cash dominates the globe: look, even our Chhillar has become Miss World!"