What kind of marketing do you use for your instagram channel? Do you cooperate with many influencers in the fashion world?
I believe this could be a good channel for letting people know about your jeans.
I'll share you a couple of examples about fashion influencers and jeans influencer campaigns.
https://boldcreators.club/influencers/fashion-beauty-makeup/
https://sourcingjournal.com/denim/denim-influencers/130-year-old-denim-brand-influencer-marketin-146568/