Does anyone else get really bad trembling when they're anxious?

I was at my friends house yesterday, it was the first time I'd been out in a while, due to social anxiety, and man, was I anxious, I was completely out of my comfort zone and I was jumpy as hell, and I was shaking so bad I could hardly pour a drink, which embarrassed me, I felt pathetic. I don't know what my friends thought, I think they were too kind comment. But almost the whole night, until I had enough drinks down me, I was shaking uncontrollably. Anyone else get this? Is it normal in anxiety/social anxiety?