When it comes to eyewear, the small details really matter over time. For light summer tops I keep to my normal size to avoid a baggy look. I think sharing honest feedback helps other buyers avoid the same mistakes.
If anyone is interested in real user experiences, I sometimes write short notes about the shops I test.
You can find one of the pages here:
visit this page
Footwear is even harder because different brands cut shoes very differently. This is why I like reading and posting on forums and community websites. If they ignore basic questions or reply with copy pasted text, I become suspicious. For fashion and clothing I pay attention to fabric thickness and stitching details.