OK, I tried on my x small Flourishes jersey. It fits! However, it is looser and a bit longer in the back than my Amici Veloci jersey and my DH's company jersey. At first, I thought maybe the company jersey was a race cut, but I never would have ordered something with elastic (and I was able to try on the samples when I bought it). I think it might actually be just a tiny difference, that a few washings will take care of.
I noticed the elastic in the sleeves, but it didn't bother me. It's not "heavy" elastic, just light, which I love for keeping arm warmers up. I love the red, too.
I was just concerned that it would be too long and baggy for this short body.