How i can get buyers to Fashion site ?

Many of us can give more helpful pieces of specific advice if you provide a link to your site, along with more information about the things that you tried in Facebook and Google Adwords ...

Facebook and Google Ads can be quite powerful at getting traffic to your website, if they are set up correctly. I recommend getting some guidance from a professional. There really is a lot involved in setting it up and monitoring correctly, and professionals are worth the cost.

The trouble with ads though, is that they provide low quality traffic. To get better quality traffic, you need visitors to be "referred" to your website. This can be in the form of an editorial posted on a news website that talks about how great your website is. This can also be in the form of social media (not ads on social media), or in forum discussions. If a customer says your website is really good, this provides a strong referral for others to try your website.

Once you have traffic coming to your website it is important to measure that traffic and see how and when they are leaving your website, to identify how to retain visitors for longer. Getting visitors to your website is only half the battle. You need to try to retain them. You can test changing headlines, images, colours and the structure of your website to see whether this has a positive impact on your visitors.

I think the best thing you can do is to create super high quality content, and then simply go where buyers hang out and share your bog posts. This increases trust which is needed for people to buy, and if they like your site they might subscribe so you can turn them into repeat buyers.

Plus it's free if you use forums and post on other blogs for instance

Doing reviews and promo video blogs on YouTube would be a great start.

Since it is related to Fashion which is something people want to see, promotion on YouTube and other video sharing, slide sharing sites can help.

There are many strategies.
It's all about testing to find the right traffic source.

Here are some:

Video Marketing (YT, Vimeo, Wistia, etc)
Podcasting (Itunes, Soundcloud)
Article Marketing
Social Media Marketing
Backlinking
Forum Marketing
Blog Commenting
SEO
Solo Ads

Etc

Solo ads and "buysellads" select project in same niche to promote.

Are you providing any content that is something that can't be found easily on Amazon's website? For example, you could have blog entry that provides "five best outfits for summer," or whatever. If you're just using the same methods Amazon uses, you can't really compete against them. They have a lot more money to advertise with, so you need to offer something different.

If you have tried the two companies and still can't make any money then IM is not for you.

I can't recommend SEO either because adword didn't work for you.

Have you considered your marketing style?
Your landing page?
The product in question?

We need more information in order to help you.

What about solo ads...

I don't know if there any many vendors for this niche, however you can search and see