Katy Perry, 34

Jeffree Star, 33

Conor Maynard, 26

Willow Smith, 18

Lorde, 22

Jacob Whitesides, 21

Ruel, 16

Mason Ramsey, 12

Ciara, 33

Daya, 20

SZA, 28

Ella Mai, 24

Oliver Sykes, 32

Charlie Lenehan, 20

Carly Rae Jepsen, 33

Julia Michaels, 25

Miranda Lambert, 35

Hirai Momo, 22

Devin Gordon, 18

Adrienne Bailon, 35

Ann Marie Slater, 23

Chance Perez, 21

Rocky Lynch, 24

Frank Ocean, 31

Keith Urban, 51

Sean Cavaliere, 19

Tove Lo, 31

Delta Goodrem, 34

Jasmine Thompson, 18

Stevie J., 47

Weird Al Yankovic, 59

Fleur East, 31

Talia Mar, 22

Peaches, 50

Drew Ramos, 21

Ethan Karpathy, 18

Davido, 26

Astrid Smeplass, 22

Monica, 38

Brad Paisley, 46

Felix Sandman, 20

Kim Yugyeom, 21

Miguel, 33

Park Hyung-sik, 27

Bjork, 53

Ulices Chaidez, 19

Heavenly Joy, 9

Chase Goehring, 23