Suggest a marketing strategy for launch of a new brand of mens clothing ?

I suggest the Use a Content Marketing Strategy

Once you know the demographics of your audience, age, education level, or where they live you can use psychographics, or personal characteristics such as values, interests and hobbies, to develop a content marketing strategy for your clothing line. Poll your customers to determine their psychographic information or use research from sources like Pew Research Center.

For example, a casual urban clothing brand may learn that its average customer is between the ages of18-24 and enjoys music and pop culture. The company can post music downloads for customers on its website or discuss pop culture on social media to interact with its audience. No matter who your customers are, a content marketing strategy should provide useful information that's frequently updated to keep the brand top-of-mind.

Develop your brand as clothing that cares by sponsoring causes that matter to your target audience. Launch a fund-raising effort linked to garment sales, such as giving a percentage of each garment sold to a charity or designing a shirt or accessory that raises awareness for a cause. Consider sponsoring an event linked to a particular charity, whether it's donating a t-shirt design or providing your merchandise to a charity auction in exchange for publicity at the event.

A flash mob is a group of people who come together in a public place in order to perform an unusual act for a short time before dispersing. Select a location where you are likely to reach many members of your target audience and launch a flash mob fashion show, where models walk around showing off your clothing for a short period of time before leaving. This unexpected act will get people excited and talking about your clothing line, so have a mobile-friendly website ready for people who want to research your company on the spot.