Selena Gomez, busy with Spring Breakers filming schedule, was unable to celebrate her beau Justin Bieber's 18th birthday, but the teen couple bonded again for a belated birthday bash in Los Angeles Friday night.

In Florida, the Disney star was seen in double denim look on Thursday as she came out of a tanning salon. 

Friday morning, Gomez was seen exiting her trailerwith a pink t-shirt and short denim cut-offs, according to Daily Mail. 

"Happy birthday to my best friend in the world world!!! Have a great birthday baby!" Gomez tweeted on March 1, the actual birthday of Bieber.

In the birthday party, Bieber and Gomez were seen partying hard, and some fan sites have said the star couple must have been drunk. Gomez wore a strapless red cocktail dress.