Justin Bieber and Selena Gomez at the 2011 Vanity Fair Oscar party in West Hollywood.
Justin Bieber and Selena Gomez at the 2011 Vanity Fair Oscar party in West Hollywood.Reuters

Canadian pop star Justin Bieber gushed over his former girlfriend Selena Gomez, as she attended the 2014 Vanity Fair Oscar party in West Hollywood, California.

The Come and Get It singer looked gorgeous in a Emilio Pucci gold embroidered tulle halter neck gown from the Fall/Winter 2014-15 collection. She completed the look in Jimmy Choo gold Sling sandals.

The 20-year-old Baby singer, posted two photos of Gomez from the red carpet on his Instagram, with the caption: "Most elegant princess in the world."

The former couple were last seen together in January, riding Segways near Bieber's Calabasas home, a year after their highly publicised split.

The same month, Bieber had hinted that their rocky romance is back on track after posting an intimate picture of himself with Gomez on Twitter with the caption: "'Love the way you look at me."

Gomez had her arm draped around his neck and her chin gently resting on his shoulder.

The 21-year-old former Disney star has previously voiced her concern for the Baby hitmaker, who has been involved in a series of unfortunate incidents lately.

"Part of life and growing up are going through things that aren't comfortable - and you hope you come out the other side a stronger person," she told MailOnline at The Sundance Film Festival.

"I will always care about Justin no matter what - my instinct after all we have been through is to protect him from any harm. Whatever he is going through I want him to come out of it stronger," she added.