Stereogum — Yesterday’s Chris Martin-curated charity concert Global Citizen Fest led to a number of surprise all-star collaborations. Ariana Grande joined Coldplay onstage to sing “Just A Little Bit Of Your Heart” with Chris Martin, Eddie Vedder and Beyonc... more info

Perez Hilton — Even when we sincerely compliment Ariana, they're not happy! Does this make any sense?? Listen to more of our Grande convo at http://Play.it/Perez and subscribe on iTunes to The PHP: Perez Hilton Podcast. more info

E! Online — Who run the world? Beyoncé and global citizens, obviously! Saturday night marked the return of the Global Citizen Festival, an annual event in New York City's Central Park that... more info

Stereogum — Coldplay performed at the Chris Martin-curated charity concert Global Citizen Fest today. The band played a new song in a soundcheck yesterday, and sure enough, they officially debuted it during their set. It’s an uplifting ballad called “Amazing... more info

Perez Hilton — Talk about a treat! Last night Ryan Murphy's Scream Queens had its two-hour premiere on Fox — and what a premiere it was! The series stars Emma Roberts as Chanel Oberlin, the head of Kappa Kappa Gamma, a very stuck up, elitist, and previously racis... more info

The Telegraph — The pop starlet appeared alongside Emma Roberts, Lea Michele and Jamie Lee Curtis in Ryan Murphy's new horror series CONTAINS SPOILERS more info

Perez Hilton — Remember that time Ariana Grande and Big Sean were dating? While it caught us off-guard at first, the two seemed to be a promising pair, especially since we already knew they worked well together (you guys, Problem is STILL stuck in our heads). But s... more info

Perez Hilton — Talk about a new look! On Sunday, Ariana Grande FLOORED her 43.5 million followers on Instagram and let down her high ponytail so that her natural, curly hair could be free. FABOOSH! Related: Watch Ariana Grande Remix Justin Bieber's What Do You Mean... more info

Perez Hilton — This is a treat for the fans! Ariana Grande debuted a new remix at her concert in Houston on Friday night, remixing Justin Bieber's What Do You Mean in a surprise treat for the fans at the show! Related: Christina Aguilera Loves Ariana Grande's Impre... more info

Perez Hilton — If there's one person in the world you want complimenting your singing, it's Christina Aguilera! Ariana Grande slayed her musical impression of The Voice coach on The Tonight Show Tuesday night, but it wasn't just Jimmy Fallon singing her praises! Ph... more info