WATCH: Selena Gomez Serenades Justin Bieber During His Birthday Party!

Selena Gomez knows how to make a guy feel special!

The 19-year-old pop star took the stage for Justin Bieber’s special 18th birthday party at the Regent Beverly Wilshire Hotel. According to Hollywood Life, Gomez grabbed the mic and pumped up the crowd with a live version of her single “Call Me Maybe.” The young couple partied alongside Ashley Tisdale and Carly Rae Jepsen.

Steal Her Style: Selena Gomez's Grown-up Chic Look!

The Mexican-American star recently wrapped her We Own the Night tour in Latin America. Back in January, Gomez and Bieber were spotted taking a break in Puerto Rico together. The pop star flew over 6,000 miles to see his famous girlfriend and the couple stayed at the Conrad Condado Plaza Hotel and Casino.

Their puppy love is starting to blossom into a serious romance! Watch Selena Gomez in action below and let us know what you think!