You Know It's Bad When Rihanna Outclasses You ... At a CHARITY EVENT, Nonetheless

The above shows Miley Cyrus being a characteristic hot mess, while her mom, Tish Cyrus, apparently took the high road and covered her damn self up ... but it's got nothing to do with age, because as you can see, Tish outclasses her daughter -- who's more than half her age -- without even a second thought.

 

This is what Miley actually wore to the 2014 amfAR Inspiration Gala, a charity benefit for AIDS research, held in Los Angeles last night. 

Needless to say, it was not a good look for Miley. We're used to her ridiculous on-stage antics and bawdy getups, but taking it to the streets in a public setting where you have to, you know, encounter other folks, is a horse of another color. 

For comparison, here's what Rihanna -- who's POSITIVELY demure when compared to Miley -- looked like at the gala: 

Now -- the most important question you'll ever answer about Miley (besides, you know, the obvious "WHY"):