There was a specific scene in the old 90s show La Femme Nikita where she showed her spine. It's off VHS so not exactly great quality but it's the best we'll get, i think:
(https://t101.pixhost.to/thumbs/286/549941493_lfn001.png) (https://pixhost.to/show/286/549941493_lfn001.png) (https://t101.pixhost.to/thumbs/286/549941505_lfn002.png) (https://pixhost.to/show/286/549941505_lfn002.png) (https://t101.pixhost.to/thumbs/286/549941509_lfn003.png) (https://pixhost.to/show/286/549941509_lfn003.png) (https://t101.pixhost.to/thumbs/286/549941513_lfn004.png) (https://pixhost.to/show/286/549941513_lfn004.png) (https://t101.pixhost.to/thumbs/286/549941515_lfn005.png) (https://pixhost.to/show/286/549941515_lfn005.png)
animated gif of the part from season 1 ep 4:
(https://t101.pixhost.to/thumbs/287/549949378_peta_wilson_spine_loop01.gif) (https://pixhost.to/show/287/549949378_peta_wilson_spine_loop01.gif)
(thumbnail doesnt animate but the real one should)
i remember seeing the show back then and not expecting her to have such a prominent spine until i saw her back in a few episodes.
it's a shame almost every high quality pic they published of her had her bending backwards to keep her spine from showing.