Well, after saying that I am not much of a star person, my article on the sizes of stars was just published in The Conversation. It's titled They might be giants: a mind-blowing sense of stellar scale and covers the size of stars from red dwarfs to hypergiants. The mini-cusps appear in the article as well :)
For a quick review, I fully recommend this video on YouTube;
It makes my head hurt a little every time I watch it.