'Tis the season of big hit records—and there were 15 songs with double digit adds today! But the Most Added honors go to Island/Republic's Shawn Mendes & Camila Cabello with their duet "I Know What You Did Last..." which pulled in 49 stations in its second week. Label mate Dawin scored 17 adds for "Dessert" (Casablanca/Republic). There was a three-way tie for 5th place, between Jason Derulo's "Get Ugly" (Warner Bros.), Justin Bieber's "Love Yourself" (RBMG/Def Jam) and The Weeknd's "In The Night" (XO/Republic). The Chainsmokers' "Roses" f/Rozes (Disruptor/Columbia) pulled in 15 new adds for the #8 slot. And finally the 10th spot had another tie, between R. City's "Make Up" f/Chloe Angelides (Kemosabe/RCA) and Tori Kelly's "Hollow" (Capitol).

--