For beauty, I say having Venus in the 1st making a conjunction to the ASC is almost a guarantee that the person will be attractive. For sexiness, I'd say Venus in any aspect to Pluto is a good sign actually. A good bunch of sexy celebs have this ones.
I second that, as I said, my Venus is in the 7th, but I saw charts of people considered "beautiful", and they had venus in 1st.
For sexiness, my mars-venus-sun conjunction works preety well
But as I said, they are all opposite Pluto in the 1st, so, in the rare cases I don't manage to hypnotize somenone into submission, they'd better be prepared for ze atomic bomb (venus in aries, meh )
teena, yes, the planets in 1st do affect appearance. For a long time I thought that Pluto was conjunct my Libra asc (I do sometimes look like a Scorp rising), but my birth time was rectified and it turned out that it wasn't. I was born a half an hour earlier, so Saturn from the 12th is conjunct my asc.
Don't know much about intercepted houses, though...