Wasalam
May Allah bless you.
Doing marketing whether with halal or haram contents, will not automatically have an impact on the income it generates. You might be using halal mean to market a halal product. But, you might end up selling this product via a haram mode of transaction. The opposite is also true.
In regards to the type of clothing, please see below the answer given by @Mufti_Faraz_Adam earlier.
And Allah knows best!