Henry VIII had terrible taste in women!
That is, IF--and that's a big IF-- the paintings of these women are at all accurate. Anne of Cleves is far from the ugliest of his wives; she is probably the prettiest.
I do understand our modern ideal of beauty is not likely to be the same as that of sixteenth-century England, but I doubt it differed so much that ugly was considered beautiful. For instance, wouldn't Gene Tierney, Grace Kelly, Angie Dickinson, etc, have been considered just as beautiful in the 16th century as they were in the 20th c? Anyway, all were far from great beauties
Catherine of Aragon:
https://upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Catherine_aragon.jpg/220px-Catherine_aragon.jpg
Jane Seymour:
http://www.artfreeshipping.com/images/Hans%20Holbein%20the%20Younger/Portrait_of_Jane_Seymour_c.1537_4832.jpg
Anne of Cleves
https://2.bp.blogspot.com/-zzTSgSYxRnw/UaP6PyCYyZI/AAAAAAAABGI/M8iPb37qK0M/s320/round+anne+of+cleves.jpg
Anne Boleyn:
http://a2.files.biography.com/image/upload/c_fill,cs_srgb,dpr_1.0,g_face,h_300,q_80,w_300/MTE4MDAzNDEwNDU3Mjk4NDQ2.jpg
Catherine Howard:
https://upload.wikimedia.org/wikipedia/commons/3/32/HowardCatherine02.jpeg
Catherine Parr:
https://upload.wikimedia.org/wikipedia/commons/thumb/4/49/Catherine_Parr_from_NPG.jpg/220px-Catherine_Parr_from_NPG.jpg