This weekend on The iHeartRadio Countdown with Mario Lopez new 'Dancing With The Stars' host Tyra Banks checks in! She'll be talking all about the new season and what she's bringing to the table on the hit ABC show Fall. Plus she's got a bunch of other projects in the works too that she will be breaking down as well. So we'll catch up with her, countdown the top 20 songs in the country, play some throwback classics and much more! Tune in!