Beauty is an opinion.
But it comes from a consensus of the majority in a particular society
that find an inspiring satisfaction in some thing.
Most often it relates to our primary sense--vision--
but it could relate to any of our senses.
The philosopher Kant is the main guy on the subject of taste and aesthetics.
Kant wrote Observations on the Feeling of the Beautiful and Sublime (1764)
Keep in mind: Kant was gendered male, German nationality, white ethnicity, and of the 18th century.
Rights need to expand out from time and body, in the future.