She is trying to cultivate a saucy new image.

But Selena Gomez looks more like the Disney kid of old as she chews on a French fry in a new picture she posted on the internet.

Adding a touch of humour, the 21-year-old captioned the image ‘goodnight Vegas’ after putting it up for fans to see on Instagram in the early hours of Sunday morning.

Lady of the night: But Selena Gomez looked more like a teenager as she hammed it up in Las Vegas in the early hours of Sunday morning

A friend also in the frame has a spoon stuck to her nose as the childish pair hammed it up for the camera.

The snap was a lot more innocent than the sexy pose she took hours earlier on Instagram with the caption ‘It’s Vegas… Sparkle time.’

And it was certainly a far cry from the sexy look she adopted as she attended the launch of Flaunt magazine in Beverly Hills earlier in the week.

The pop star struck a series of saucy poses as she showed off her assets in a black silk dress with a plunging neckline and opening at the stomach.

Saucy: But Selena looked far more mature as she flaunted her wares in Beverly Hills earlier in the week

Sexy pose: The popstrel was giving it her all and showed good form in this tight fitting silk black dress

However it may have been a refreshing change for the old guard of her army of fans.

For they grew up watching her light up their television screens as jolly teenage sorcerer Alex Russo on Wizards Of Waverly Place.

Selena starred in four series of the hit show, which aired from 2007 to 2012 on Disney Channel, and also returned to the role for a one of special TV movie which aired in March.

Wand-erful performance: Selena starring as Alex Russo in Disney show Wizards Of Waverly Place