Carey was on hand to promote her newly-released greatest hits compilation, "#1 To Infinity", which features all 18 of the singer's No. 1 hits on the US Billboard Hot 100 chart - more than any solo artist in history.

The No. 1 chart hits on "#1 To Infinity" range from 1990's "Vision of Love" and "Love Takes Time" through to 2008's "Touch My Body." She also discussed her recently-launched Las Vegas residency at The Colosseum at Caesars Palace, where she performs her 18 number ones and new single, "Infinity", during the show.