28th Annual ARIA Awards 2014 - Arrivals
Harry Styles from One Direction arrives at the 28th Annual ARIA Awards 2014 at the Star in Sydney on Nov. 26, 2014 Ryan Pierse—Getty Images

Harry Styles Rings in 21st Birthday With Chris Martin, Jennifer Lawrence and Adele

Now this is one star-studded birthday!

Harry Styles brought out Hollywood's A-list to his birthday bash in L.A. on Saturday night.

On the guest list were on-again couple Chris Martin and Jennifer Lawrence, as well as Styles' new gal pal Nadine Leopold.

Others at the One Direction boy-bander's 21st birthday party included David Beckham, Adele, Adam Levine, ex-fling Kendall Jenner, Courteney Cox, Rashida Jones and fellow Brit Cara Delevingne, a source tells PEOPLE.

Styles had not one cake, but four from Sweet Lady Jane – and his happy face graced the tops, says the insider, who added that photos were not allowed at the super-starry bash.

"When he blew out his birthday candles, he FaceTimed his mom," says the source. "He was so sweet to all his guests."

This article originally appeared on PEOPLE.com

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