Singer-songwriter Katy Perry opens up to PEOPLE about reading reviews — and the advice she lives by from her therapist.

Fans of Gayle King were overwhelmed with emotions after seeing her story involving Katy Perry and a young fan trying to help others.

Zayn Malik, Usher, Coldplay, Bad Bunny, Katy Perry, Shakira and Ed Sheeran are also among artists hitting the road.

Katy Perry opened up about dealing with negative reviews of her albums throughout her career. She also shared the new approach, suggested by her therapist, which changed her life!

Lady Gaga, Katy Perry and More Must-See Performances ET highlights all the biggest moments and performances from the FireAid benefit concert, which raised over $60 million for LA fire relief efforts.

Take a look at our curated list of the 25 biggest pop culture moments from the first 25 years of the 21st Century.