Are the clothes a work expense genuinely? If so are they somehow tax deductible? Or is the VAT portion of the price? (I have no idea what the answer to that is btw, just a thought, assuming you are registered as a business of some kind and must have an accountant if you are earning 50k per year).
I think you need to separate essential work spending from "I like buying this" personal fun spending. If your blogging income depends on you spending 400-600 per week on clothing to blog about then you are not "earning" 900-1300 per week in reality - you are earning 300-900 a week. However it you have to consider whether the spending is actually genuinely contributing to your earning power - would you be able earn as much blogging if you spend less (probably - and if not your blogging isn't as profitable as your figures indicate and is even a loss maker in the weeks you also spend money your DH earned)?
Once essential business expenditure is accounted for you and your husband should both be contributing to the running costs of your household - you have to reach an agreement, but it absolutely is U to spend most of your income on clothes just for yourself above and beyond any amount you have to spend to make your business profitable, and sometimes some of your DH's income, and assume he should be the only one contributing to mortgage/ rent, bills, food, clothes for DC, petrol, insurance, holidays....
Keep business and personal accounts separate. Ensure you and DH both have the same amount to spend on yourselves (it might be quite a lot if your husband is a high earner too). Put the rest of your earnings into the joint account - assuming that is what your DH also does.
Your money isn't pocket money - you and your DH are equally responsible for running home and kids, though you don't have to put the same amount in pound for pound it shouldn't be that one of you puts all their income into family funds and the other spends all theirs on unnecessary luxuries for themselves.