Making the 15-hour flight across the globe, Jessie headed Stateside straight from filming in Sydney with The Voice Australia and she still managed to look a-mazing as she took to the red carpet.
She joined Josh Horowitz in the sunshine, welcoming the award's star-studded guests - including the likes of Rebel Wilson, Jennifer Lopez and Pitch Perfect's Brittany Snow- as they arrived for the ceremony.
Following her presenting stint, Jessie took to Instagram to show off her hot ensemble she had worn to the event.
In her snap, Jessie can be seen looking effortlessly cool in funky mirror-lensed shades and a daringly low-cut beaded suit. The 'Bang Bang' singer styled her edgy ensemble with a metal choker necklace, letting her recently-lengthened locks fall loose.
Alongside her photo, she said: "What?! #movieawards @mtv."
The starlet also revealed she was feeling rather jet-lagged from her gruelling schedule.
Lately, Jessie has been filming for The Voice Australia as their new coach on the panel and she was hard at work right up until heading to the airport.
Sharing a photo of her office - the MTV Movie Awards red carpet - she told fans: "Full day of filming at The Voice. A 15 hour flight the next morning so wrong body clock to sleep. Went back in time and landed at 6am and straight to [MTV] for 9am today in LA. Here we go, we be working!!!!"
Jeeze, now that is being on the go!
Feeling a little knackered after her MTV gig, it's no surprise Jessie was then calling upon her boyfriend Luke James to come and see her. Especially as she was back in the same country as him!
Jessie has been without her beau while working in Oz and has made no secret of the fact she is missing him. Giving the opportunity to catch up with singer Luke, she said: "Time to chill... Thank you @mtv for having me!! @wolfjames come find me please thank you bye x."
The pair first confirmed they were officially dating back in November last year and since then it seems Jessie and Luke are pretty smitten.
Jessie has even hinted marriage could be on the cards for herself and Luke!
She told the Mail Online: "I hope Luke is The One... Luke is amazing and he and I are amazing."
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Watch Jessie's video for 'Bang Bang' here: