Couple of things:
First of all, “men” with adrogen insensitivity are NOT men - they’re women. Prior to current knowledge of genetics and ability to examine chromosomes no one ever considered that they were anything other than women with an unfortunate birth defect (lack of uterus and ovaries). Although the internal female structures never develop, the external appearance and the vagina are pretty standard issue. I think there are some minor differences, but you probably have to know what to look for to spot it - your average Joe just won’t notice.
Second, these folks are completely insensitive to adrogenic hormones. As a result, they never develop any body hair other than on their scalps - no armpit hair, no public hair, no leg hair, no “embarassing, unwanted facial hair”. These gals looked like they’ve been freshly body waxed but they aren’t - and never need to be. Since androgenic hormones are unable to affect them, the estrogen produced by any human body with XY chromosomes drives the formation of breats - these women tend to be well endowed in the bosom. Testosterone and its cousins are unable to affect their bones, therefore, their skeletons retain juvenile/feminine characteristics. As one example, in men the angle of the jawbone just under the ear tends towards a 90 degree angle, while in women it tends to be greater than that - this is, in fact, one of the things that makes a jawline look masculine or feminine. Some women with “mannish” faces have a jaw angle of close to 90 degrees. Women with AIS, though, have a jaw angle that is usually greater, on average, than that of the average XX woman - hence, “more feminine than most women”. There are other skeletal features that are subtle, but contribute to how “mannish” or “womannish” a person looks, and women with AIS tend toward the extreme end of the “womannish” scale on all of them - except one. AIS women tend to be very tall. That is because testosterone & company affect when the skeleton stops growing, and when testosterone is either lacking (as in eunnuchs, which also tend to be very tall) or not functioning correctly, the skeleton gets the signal to stop growing much later than usual. So you wind up with a tall woman with long legs and arms. As already mentioned, they usually have flawless skin - no acne. They also never go bald, and in fact, over time, their hair thins less than that of a normal, XX woman (who does produce small amounts of testosterone and is somewhat affected by it). The big tip-off is that these women never menstruate - they have neither ovaries nor uterus. Diagnosis is frequently made when an 18 or 20 year old woman goes to a doctor to find out why, despite her otherwise adult body, she isn’t menstruating. Needless to say, they also never give birth.
The end result is frequently a six foot tall, long-limbed, slender woman with flawless skin, big breasts, and feminine bone structure. Said individual could probably do well as a runway model, XY women are frequently described as “runway model” in looks, and I have no doubt some of the runway models we see are, in fact, XY women. Which ones, though, I don’t care. Odds are, you’ve likely seen or met one of these individuals but odds are also that you’d never suspect they’re an XY female.
Any woman who has given birth is certainly not an XY female.
The actress that there has been much speculation about - I’d say unlikely to be an XY female just based on her “mannish” bone structure. But not impossible. Just very unlikely in my opinion.