By 15, Shields was saying: “Nothing comes between me and my Calvins” in an advert for Calvin Klein underwear.
“Rage Against the Regime” read a sign taped onto a Carlsberg advert near my house.
mid-15c., averten "to turn (something) aside," from Middle French avertir (12c.), from Late Latin advertere (see advertise). The -d- added 16c. on the Latin model. Related: Adverted; adverting.
colloquial shortening of advertisement, attested by 1860.