Delhi

Good evening,
Yes, of course, you can do PG in fashion designing, but make sure that you do it from a good college.
Thank you.
All the best.

You may refer to the following link for the ranking of IITs:
https://www.shiksha.com/b-tech/ranking/top-engineering-colleges-in-india/44-2-0-0-0

SRCC, St Stephen's, Hindu College, etc. are the best options to do B.Com (Hons) and BA (Hons) in economics in Delhi based on their all India rankings.

Work experience is not a mandatory condition to seek admission in MBA at FMS, Delhi University.

Yes, you can go for MBA in energy and environment stream. Prepare well for the MBA entrance exams. A good score in CAT will make you eligible to sit for top institute's selection process. SIIB is one of the good institutes offering this course.

All the cities you have mentioned have the best of colleges for MBA. Visit this below link for the list of top colleges in India:
https://www.shiksha.com/mba/colleges/mba-colleges-india

I would suggest not to concentrate more on the cheaper colleges. I agree, these days, the cost of education is very high. You cannot get affordable and best colleges together. The cheaper colleges are not good in terms of faculty campus and placements. The expensive ones are much better.
You can go for DU and JMI colleges in Delhi. They have comparatively lesser fee structure as compared to the private one.

Hello Vicky,
Please refer to the link https://www.shiksha.com/law/ranking/top-law-colleges-in-delhi/ncr/56-2-0-10223-0 for best law colleges in India.