OK, I'm clearly losing it. IMDB are probably going to have me on a "danger money" list or something, but I've been trawling pictures of star[let]s, esp after some of the suggestions.
One thing I learned long ago was to ALWAYS look at the ears. Everything else about a person can be altered by even a small amount of make-up, but people rarely bother with ears, and they're as individual as fingerprints.
So, check out the advert actress' ears, and then look at this publicity pic of Ann Sheridan. Note in particular the bit of bulbousness on the inner of the outside ridge, matched with the outer of the middle ridge: if the ear were on a head that's straight up/down, it would be apx 1 o'clock, when she's kissing, it's a little past 3 o'clock. I theenk I see this on the ears of Ann Sheridan in that photo still. The publicity photo's ear is slightly rounder overall, but that could just be the camera angle/tilt of Ann's head. The cheeks (esp the apples of them - the sides/bones are easier to tweak with rouge), the chin, the lips, all seem to be similar. But maybe somebody with better res on their pooter would
Kings Row (with Ronald Reagan) is roughly of that era, so her face would be similar. In a still of that film, Reagan is wearing pyjamas with a loose collar, which could be the back of the man in the advert.
Of course, by the time I post this, we might have had a real answer back...
Anybody want to take one for the team and watch Kings Row?