found herself in the middle of an Instagram battle between Justin Bieber, Selena Gomez, Sofia Richie. (We, of course, watched the whole thing unfold.) The modelhad posted Caitlyn was "told some time ago" about Kylie's possible pregnancy (Cait's reps laterdenied Elizabeth Warren, a senator representing Massachusetts, essentially tossed her hat in the ringwhen it was still 2018witha video announcement released on Twitter released her latest round of insanely addictive music, so waking up to news that she has a brand-new song out is quite possibly the best way to kick off the week. Especially since the song is all sorts of awesome.Selena recorded "Hold On" with indie rock faveBen Kwellerfor the soundtrack of her upcoming movieRudderless