Coachella: Katy Perry with Robert Pattinson; Beyonce surprises fans

Katy Perry partied with Robert Pattinson at the Coachella Valley Music and Arts Festival.

The 'Dark Horse' singer, who split from John Mayer in February, was spotted catching up with the 'Twilight Saga' heartthrob at the H&M Loves Music party on Saturday night (12.04.14).

A source told PEOPLE.com that the 29-year-old star met up with the British actor, who was accompanied by a group of pals, in the VIP section, where she sipped on water.

The insider said: "(They) chatted and bobbed their heads along to Major Lazer before Perry eventually disappeared further into the crowd."

Another source said that the newly single beauty, who attended the festival at the Empire Polo Club in Indio, California with John last year, "seemed really relaxed and was having a great time."

Katy and Robert have been close friends for years and a friend recently revealed he has been helping her to get over 'Who You Love' hitmaker John, 36.

The source told OK! magazine: "Right now, Rob has made her promise to count on him for support, like she did for him when he split from Kristen Stewart.

"They do have a wonderful friendship, and they trust each other. No matter how down she is, Rob can always make her laugh, and she loves that."

(AFP)

Beyonce and Jay Z surprises fans at Coachella

Beyoncé Knowles made a surprise appearance at the Coachella Valley Music and Arts Festival on Saturday night (12.04.14).

The 'Drunk in Love' hitmaker joined her younger sister Solange Knowles on stage as she performed her hit 'Losing You.'

Although not listed as an official performer, the 32-year-old star clearly took some time away from her busy schedule to prepare for the show at the Empire Polo Club in Indio, California as the siblings performed perfectly synchronised choreography during the song, according to Billboard.com.

Solange, 27, is a regular attendee at the annual three-day festival and also performed the same track last year with The XX.

Meanwhile, Beyoncé's husband Jay Z also shocked fans by jumping on stage to perform an impromptu rendition of 'Dead Presidents II' during his friend Nas' midnight set.

The 44-year-old rapper then rapped his own track 'Where I'm From,' before Nas, 40, continued with his show, which honoured the 20th anniversary of his debut album 'Illmatic.'

P. Diddy helped him to end his set by stopping by to perform 'Hate Me Now.'

Selena Gomez, Kendall and Kylie Jenner, Vanessa Hudgens, Aaron Paul, Katy Perry and Lea Michele were among the other celebrities spotted at the event.

A second run of the festival will take place next weekend.

Pharrell Williams fights against the wind

Pharrell Williams kind of blew it on Saturday night at the Coachella Valley Music and Arts Festival, where in spite of a hot streak that's included some of the past year's biggest hits -- "Happy," "Get Lucky," "Blurred Lines" -- the singer-rapper-producer seemed not quite ready for his prime-time performance.

Williams himself might insist he was the victim of the blowing: At least three times he complained about the "stupid" wind that turned Coachella into a dustbowl Saturday; he said it was ravaging his voice and had forced him to scale back his stage production.

And, indeed, by the end of his hour-long set, his vocals had become not much more than a hoarse bark.

But as much as you felt for the guy, who seemed genuinely sorry that his big Coachella debut wasn't going according to plan, but the show must go on.

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