She was extremely sexy without looking like a slut. Like another poster said upthread, not all tatted up or pierced all over.
Just classy and sexy.
The only other person who fell into the same kind of “sexy but virginal” vibe as Raquel Welch was Doris Day. And even that is not a complete comparison.
Doris Day was the “girl next door”, while Raquel Welch was “the feral woman”.
Raquel could have been a war queen.