Fashion Design

No, you cannot do B.Sc Fashion design after Mechanical Engineering Diploma. However, you can do B. Des Fashion design from NIFT.

Yes, you can take. You can purse B.Tech in Fashion designing after 3 years diploma in garment technology. The eligibility of B.tech in Fashion designing is to qualify the diploma with a minimum of 45% aggregate marks and you should qualify the ECET entrance exam .
Other way of getting admission is to

You can see eligibility and other admission details here https://www.shiksha.com/college/national-institute-of-fashion-technology-chennai-taramani-27353/admission#admission

Yes, you can do. NIFT and LPU are the Institutes offers B. Des in Fashion Design course. The eligibility criteria are as under. Eligibility Criteria for LPU (Qualifying Exam) :- Pass with 50% aggregate marks in Diploma (Fashion or Garment Technology) [ (3 years after 10th) or (1year /2 years after 1

There is no such entrance exam to get admission in the JD Institute of Fashion Designing. Candidate must have passed 10+2 from a recognized board to get eligible for the course.

Admission process for 2019 session is closed now for fresh admission , you can apply for 2020 session in October, 2019 by logging in to https://nift.ac.in/admissions

Yes, Diploma in fashion designing is a 3 years course just as most of the Diploma courses are of 3 years.