Bollywood Mega Star Amitabh Bachchan got emotional as he shared his first Ad with daughter Shweta Nanda on Twitter. Big B tweeted, 'Emotional moment for me... tears welling up every time I see it... daughters are the BEST !'. Earlier in 2010, Amitabh Bachchan and Shweta Bachchan Nanda first made their TV debut in filmmaker Karan Johar's popular talk show 'Koffee With Karan.' After eight long years, Shweta has made a comeback on small screen with her father, again. Watch the video for more insight.