Same here. When I was in my early 20s I used to work in an office with this chick named Sheila. She was in her late 30s / early 40s, married, had a couple of kids. She was kinda pretty but not a head-turner by any means. Curvy body typical of a mom her age. Decent-sized tits -maybe a large D if I had to guess, but I only saw her in conservative office tops so it was hard to say.
One spring she goes on vacation for a couple weeks. When she returns, she walks into our Monday staff meeting with a HUGE set of brand new titties. Not Brittany-huge or anything, but still like...... distractingly-huge for a normal woman with a normal job. If I had to guess I'd say she got at least 1000 cc implants per boob.
Nothing else about her appearance had changed. She was still the same old Sheila, wife/mom/co-worker, except now she had this pair of pornstar-sized knockers. The contrast between her otherwise normal "mom next door" appearance/personality and her big fake bimbo titties was so hot. I was always curious what motivated her to go so big.