Come on. Only a complete philistine really believes there's no objective standard of beauty.
No there is not. (PERIOD). There are relative standards based upon groupthink. Different cultures will have different standards because the "group" has a different mindset.
Even the same groups will have a dynamically changing version of "beauty" over time. Take, as an example, female beauty...and look at how the "standard" has changed by sampling the playboy centerfold from the magazines inception until now.
CLEARLY the standard of female beauty has changed over this time. If it was a clear objective standard there would not have been such a migration.
If there were a clear objective standard of "art"...then Picasso would never have become a leading artist and his paintings would have never fetched millions at auction.
You, sir, are not demonstrating a clear understanding on culture and its impact on morality and perception.