Ita??s tough to believe but thata??s true. The voluptuous beauty Vidya Balan, who is presently on cloud nine with the success of her movies 'Kahaani' and 'The Dirty Picture' began her acting career as a nerdy 'Radhika' mega hit TV series 'Hum Paanch'. But as they say, a??no pain, no gaina??, Vidya too struggled her way to get established in Bollywood and bag the role of 'Lolita' in her Bollywood debut 'Parineeta'.