[Netzwerkfehler]

I’m looking to do a sweatshirt that’s worth £179 (it’s a sweatshirt). Will it work if I order 2 t shirts worth around 10-20£ and just say they arrived but the sweatshirt didn’t or should I order more clothes?

What store are you talking about?
Partial is always easier but in the past couple of days, I have seen partials failing miserably because of weight issues.
But in my experience, ASOS is easy and do as you stated. With Represent, I would suggest you rip open a bit of your package on the side and tell them. Depends where you are but Represent ships from US and EU and it's a long way to a lot of countries. It's going to a lot of different hands so it's quite easy to think about someone ripping it open and taking the most expensive item out.

I’m talking about asos. Do you think I should order an additional jacket to mask the weight?

I would just go for it! And please keep us updated.