Dear Nabeel,

There are many specializations in MBA. Chief among them are:

• Finance
• General Management/Strategy
• Entrepreneurship
• Nonprofit/Ethics
• International Management
• Industry/Operations
• Marketing
• Media/Communications/Entertainment
• Corporate strategy/Consulting
• Supply chain management
• Human resources
• Accounting
• Health Care Management
• Information Systems/IT/Technology
• Economics
• Law
• Organisational Behavior

Why you should choose one and not the another is entirely a personal choice.I suggest explore your interests before choosing a field.

Fashion management is a niche area and has multiple specializations such as:

• Luxury and fashion management
• Marketing and fashion management Fashion marketing
• Brand and product fashion management
• Fashion management and communication Fashion communication
• fashion design management
• fashion merchandizing management
• fashion retail management  

People going for a particular academic, business field usually have a knack in that particular field to succeed. There are career openings in Fashion management as well. You can work as a Fashion marketing manager/executive, Retail manager, Production manager, Creative fashion management jobs. 

Do revert if you need more information.

All the best!