Dress looked nothing like the pictures provided. When you try to complain the Tidebuy dispute link won't work, their responses - when and if received - make little sense and the dress is likely arrive too late to start a dispute through PayPal. Also I didn't see the Tidebuy website advising about import tax, and I've just had a bill from HMRC just to add to it all.
If you've ordered via PayPal go back to the PP website, click on Legal Agreement, then Acceptable Use of Policy and scroll down to a report tab. You can then join me in letting PayPal know of your experience and help me get an investigation started - the more people who do so the more notice I'm sure they will have to take.