Justin Bieber
Justin Bieber celebrated his 21st birthday on 1 March Reuters

Canadian singer and songwriter Justin Bieber celebrated his 21st birthday with his model friends Hailey Baldwin and Yovanna Ventura.

The 18-year-old Spanish fitness model, who was rumoured to be dating the Baby singer, posted a photo of herself on Instagram, with her leg wrapped around him, along with the message: "Happy Birthday!"

Happy birthday!! ?

A photo posted by Yovanna Ventura (@yoventura) on

Meanwhile, American actor Alec Baldwin's niece, who was also romantically linked to Bieber, shared a picture on Instagram of herself, with her arms wrapped around him.

21

A photo posted by Hailey Baldwin (@haileybaldwin) on

Meanwhile, Bieber's former girlfriend, Selena Gomez was not invited for his birthday party.

"Selena pretty much knew that she was never going to get an invite to Justin's 21st birthday party," a source told Hollywood Life.

"But she wasn't downhearted by it – she's moved on with Zedd an older boyfriend, and is enjoying the most grown-up relationship she's ever been in," the insider added. "There is no drama – like with Justin – and it's all very easy."

"Selena doesn't really care who Justin hangs out with – and wasn't surprised that Yovanna and Hailey were at the party," the source went on.