As somebody who prefers to write my characters as being naked…. I will frequently add a bit of description to the state of the breasts/dick; might be sag, swaying with the gait, so cold the balls are non-existent, maybe its pubic hair, etc. I do this because it’s a reminder that the character is naked w/o having to repeatedly write “naked”.
Also, I typically avoid absolute measurements, because I don’t really need to know it’s “K-cup”, and TBH, that’s less informative IMO than simply stating “big” vs “small”. If two are standing side-by-side, that’s where the relative comparisons might come in, especially if it’s from the POV male who’ll check. It’s fairly limited when I’ll write an absolute (a bio, a ruler, a dispute to clothes sizing, etc) and needed for the story.
Now, the original question was in regards to introductions, I suppose a bit more is okay, if it’s relevant, to help introduce, but the reader typically doesn’t need a full bio there either. “Helga was a big, busty, blonde woman who staffed the kitchen.” And you can get more details later in the scene as she’s complaining about her constant back pain, or twenty fifth pregnancy.