"hottest pop" is correct and usable in written English.
It is typically used to refer to popular music genres or the most popular songs in a given genre. For example, "The music charts this week are full of the hottest pop hits!".
Elbows are 2015's hottest pop body part: Madonna shakes hers in her latest video, Beyoncé incorporates the Chicken Dance into her routines, and Guy Garvey's band's Google ranking spirals out of control.
Look at Lady Gaga on the cover of American Vogue: if she wasn't posing hands-on-waist her dress would be a shapeless sack, and the world's hottest pop star would look like a woman in a wig who didn't know what to do with her arms.
I ask because I am about to meet Ke$ha, this year's hottest pop poppet, a 22-year-old tousled blonde who is so volcanically trendy that she has already been compared with Madonna and the Beastie Boys despite not actually having released her UK debut single yet.
Barring a surprise Beyoncé release, the hottest pop songs of summer 2014 have been decided.
Beyoncé might be the world's hottest pop diva, but ultimately, she's "still selling sex," according to actress and comedian Lily Tomlin.
It's the rich, randy stuff of MTV fantasies, the hottest bash in the hottest city thrown by the hottest pop stars and DJs: Pitbull, Ke$ha, Miley Cyrus, Jason Derulo, Icona Pop, Krewella, Afrojack and others.
Since then the Matrix has become the hottest pop-rock production team of the moment, the go-to people for record executives who think that an artist's CD-in-progress needs a sure hit.
LA's Hottest Pop-Up Bar Goes Up In Flames.
Check out the latest hot pop culture couple: Lady Gaga and Senator Harry Reid, the Nevada Democrat and majority leader.
("Hot Pop" on a picture of Mr. Pitt; "The Little Ladies" was written over a photo of Ms. Jolie, Shiloh and her other daughter, Zahara).
She has been a television producer and writer and until the fall of 2002 was a field producer for "Hot Pop," a cable television program on popular culture.
