No need for correction there. She has been deliberately putting in that childishness after getting told that her Kabhi Aar Kbhi Paar prformance was cute. I did not see any childishness in her voice when she sang that punjabu number the very first time. She came across as more sensible and focused on music at that time. As the time is progressing, she is moving her focus on "cutenss" rather than "singing"......just my two cents based on my observations so far. She has been consistently degressing....just like Shujat.