UK VAT Registration for zero rated vat goods (Kids Clothes)

Hi

I have a store where I seem my handmade Kids clothes. I want to start selling to UK from Australia where my store in located. But I am very confused on the UK VAT rules after Brexit.
I understand that normally you need to register for VAT number in UK if the goods value is under 135 Pounds, but does that apply for zero rated VAT goods (I understands that Kids Clothes (for Under 14 years old)) are at 0% VAT. Do I still need to register for VAT number, but not report any VAT or no need to register?

BR
Chris on behalf of Hanna