There might have been a few famous faces at the Super Bowl in the US last night, but the real hot ticket for the weekend was Harry Styles' 21st birthday party.

And the Oscars has got a lot to live up to after the staggering array of stars who turned out to see the One Direction heart throb get the key to the door, so to speak, in Los Angeles.

Cara Delevingne, Jennifer Lawrence, Kendall Jenner, Rita Ora, David Beckham, Chris Martin, Kelly Osbourne, Alexa Chung and Cindy Crawford were among the famous names at what could be the party of the year.

Even semi-reclusive pop megastar Adele is reported to have put in an appearance to watch Hazza blowing out his candles!

And his assembled mates are reported to have been treated to a karaoke performance by the birthday boy - as they enjoyed cupcakes with their drinkies.

The pics have been popping up all over Instagram and Twitter since the bash - and our favourite so far is a bathroom selfie by Cara D with guest appearances by Kelly O, Kendall J and actress Rashida Jones.

Although Rita Ora's snap of "one of" Hazza's cakes - featuring a portrait of him as a youngster - comes a close second.

And Harry has taken to Twitter briefly himself to thank fans and friends for their good wishes.

He wrote: "Thank you for all the lovely messages for my birthday. All the love. H"