I.on [美 ɑn, ɔn, 英 ɒn]介词on often appears as the second element of certain verb structures in English (count on, lay on, sign on, etc). For translations, see the relevant verb entry (count, lay, sign, etc).
However, the fashion journalist was not favorable of the oft-times not-so-judicious choice of guest judges, the put-on cattiness of certain contestants, and the lame attempts at "colegiala" accents.