OF COURSE! I know of Shona McTavish (my collector's impluse is particularly assertive when it comes to retro models, tho my knowledge of them is surpassed by true experts) but it didn't strike me that it was her here. Many thanks for the ID.

PS: the referent "thick and creamy" just seemed appropriate and was meant of course in the most affectionate way. Lord knows she could be thicker (and creamier) and she'd STILL get quite the rise out of me.