The close friends joined Pink and Brian Wilson at a star-studded party held at Hollywood record store Amoeba, reported Entertainment Tonight.
MCCartney's stylish friends Gwyneth Paltrow, Kate Hudson, Katy Perry, and Orlando Bloom were among the crowd at the British designer's fashion Autumn 2016 Presentation.
MCCartney took a moment during the festivities to honour David Bowie, who died on Sunday, calling him "a genius".
Stella previously posted a picture of herself with the visionary rock star on her Twitter feed, and captioned it: "I feel very, very honoured to have a personal story about David Bowie, I can't believe that I can say that."
"As a designer, as somebody who is constantly looking for inspiration, David has always been there on every level. What an incredible genius.
