This weekend on The iHeartRadio Countdown with Mario Lopez the very talented Lennon Stella will be stopping by! We first saw Lennon on the hit show 'Nashville' for six seasons and now she's launching a solo career! Her new single 'Kissing Other People' is climbing the charts AND she's got a brand new song out with Meghan Trainor as well which you can check out below. So we'll catch up with her, countdown the top 20 songs of the week and play some of your throwback favorites! Tune in!