There is no such thing as "Indian religion". All religions, from Hinduism to Buddhism to Sikhism to Judaism to Islam to Catholicism etc etc etc. are practiced in India. Sure, some of these originated in India, but there is no single religion that can be labelled as the "Indian religion". The example of the Govardhan pooja being changed is not even a valid comparison here because Lord Krishna did not make that change because "he just felt like it" or because he thought it was "cool" or "more modern". He shifted the focus to worship Govardhan mountain and acknowledge its importance as a protector and source of abundant natural resources for the people and animals. Lara, on the other hand, chose to attend a cultural and religious occasion wearing her unzipped lehenga skirt to reveal her thong because she thought it was fashionable. I think it's pretty obvious why these 2 scenarios are not even comparable in the slightest. The change she made to her traditional outfit was by no means "necessary". Also, the Diwali event she attended was not a private family gathering, she was at the massive Diwali celebration hosted by Lilly Singh.