But why do they have to tart up what used to be classy red carpet events or football extravaganzas?
"having a sharp taste," late 14c., perhaps from Old English teart "painful, sharp, severe" (in reference to punishment, pain, suffering), of unknown origin; possibly related to the root of teran "to tear." Figurative use, with reference to words, speech, etc., is attested from c.1600.
"small pie," c.1400, from Old French tarte "flat, open-topped pastry" (13c.), possibly an alteration of torte, from Late Latin torta "round loaf of bread" (in Medieval Latin "a cake, tart"), infl. in Middle English by tart (adj.).
To decorate; prettify; bedizen; gussy up: go the glam route or tart it up or punk it down/ American directors feel obliged to tart up Shakespeare (1938+)
A promiscuous woman, esp a prostitute; harlot; hooker: nothing cheap for us like the grimy tarts on Mercury Street
[1887+; fr tart, the pastry confection, esp the English jam-tart; in original early 1800s use it meant any pleasant or attractive woman and only specialized at the end of the century]