AceShowbiz -

Nick Jonas treated some of his fans in Los Angeles to pleasant surprises. The former Jonas Brothers served as a delivery boy on March 28 for customers who ordered alcohol via Saucey app where he was one of the investors.

Thanks for the shot @nickjonas #jealous #saucy

A photo posted by Adrienne Childress (@adriennechildress) on Mar 27, 2015 at 11:40pm PDT

Clear eyes, full hearts, can't lose. I'll never be over this @nickjonas #springbreak2015 #mercy

A photo posted by Shannon McNulty (@shannonmcnulty_) on Mar 28, 2015 at 10:43am PDT

The ex-Disney star poured wine, did shots, and grabbed a guitar for impromptu performances. "Pure craziness and fun times last night in Los Angeles. Met some awesome people. Thanks, @SauceyApp for it!" he gushed after crashing parties.

#jealous @nickjonas #saucey

A video posted by Adrienne Childress (@adriennechildress) on Mar 28, 2015 at 1:15am PDT

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A photo posted by @nickjonas on Mar 28, 2015 at 12:08am PDT

"Speechless. Nick Jonas in our apartment, delivering me wine and singing me songs. My life has been made," one fan wrote. Another gushed, "Nick Jonas just casually playing "Jealous" for me. After we shared a bottle of wine. IS THIS LIFE?????"

A photo posted by @nickjonas on Mar 27, 2015 at 11:14pm PDT

A photo posted by @ellsween on Mar 27, 2015 at 11:00pm PDT

Nick Jonas is scheduled to host and perform at Nickelodeon's 28th Annual Kids' Choice Awards at the Forum in Inglewood, California this weekend. He is joined by other musical guests like Iggy Azalea, Jennifer Hudson, and 5 Seconds of Summer.