The 28-year-old pop songstress joined the One Direction singer at his birthday party at Café Habana in Malibu Wednesday during the venue's karaoke night. Adele was spotted drinking margaritas and smoking cigarettes at the bash, E! News has learned.
Styles dressed casually in a tan, black and red printed shirt over a white top, paired with a black jacket. He was photographed smiling and mingling with guests, including two mystery girls, while holding a drink.
Motley Crue drummer Tommy Lee, 54, also joined the fun and took a selfie with Styles and posted it on Instagram.
"Happy Bday @harrystyles f--king rrrrrrright!!!" he wrote.