Since part of the reason why Edward had to abdicate was that morganatic marriage doesn't exist in England, it wasn't legal to saddle him with a morganatic marriage once he'd abdicated. Wallis was entitled to the HRH under the 1917 Letters Patent, and there was nothing in those Letters Patent to justify the nonsense about how HRH only applied to royals in the line of succession. As a son of George V, Edward was HRH, line of succession notwithstanding, and as the wife of an HRH, Wallis was entitled to the same style. As with so many other cases, I think the truth is somewhere between the extremes of "it was all Wallis's fault" and "she and Edward were simply victims," and we have a thread for the discussion in the British forum.
Wallis certainly knew how to wear impressive jewellery, although I must say I think a lot of her jewels look very dated nowadays regardless of the fact that they were cutting-edge fashion at the time. I don't care for the gigantic pieces of costume jewellery that she wore, and I wonder whether she'd have indulged in that stuff if she'd been Queen Consort, but some of her genuine gems were beautiful. I don't much like emeralds as a rule, but her engagement ring was a spectacular piece of work.
Wallis certainly knew how to wear impressive jewellery, although I must say I think a lot of her jewels look very dated nowadays regardless of the fact that they were cutting-edge fashion at the time. I don't care for the gigantic pieces of costume jewellery that she wore, and I wonder whether she'd have indulged in that stuff if she'd been Queen Consort, but some of her genuine gems were beautiful. I don't much like emeralds as a rule, but her engagement ring was a spectacular piece of work.