There are a lot of people out there who believe that 'flattering' is synonymous with 'makes you look thinner'. That clothing is good if it hides your 'imperfections' and minimises you as much as possible.
'It should be against the law for people above a certain size to wear leggings'... 'She should be wearing a nice kaftan with that bikini to skim over her flaws'.
Well, in the most respectful manner, fuck that! Wear what you want! You don't need to hide a single bit of your perfect self because you don't fit someone else's warped body ideals. Wear whatever makes you feel good, nothing could be more flattering than that!