Adam’s apples, good thing to check.
Also look for peach-fuzz on their cheeks. No peach-fuzz equals shaving.
(s) nully, who used to live in Hollywood...
Yup... that’s a good sign, never thought about that. Also: big hands. Large calf muscles. Excessive or crudely applied makeup (real women are more subtle and have a lot more practice). Also, most trannies can’t resist wearing heels, but can’t walk in them very well, so they are wobbly.