Ariana Grande is all smiles as she stuns in flower dress while promoting upcoming film Wicked in Vegas

ARIANA Grande looks over the rainbow in a flower dress as she talks about her latest film set in the Land of Oz.

The 30-year-old singer was at CinemaCon in Las Vegas to promote the screen version of stage musical Wicked.

She plays Glinda in the Wizard of Oz spin-off, which is out in November.

The film is set to go ahead after weathering the Hollywood acting strike and years of delays.

Filmmakers used UK extras, who are not part of the US actors union and therefore did not take part in the strikes.

The Screen Actors Guild announced the strike last year after failing to reach a deal over fair pay from streaming services and an agreement that artificial intelligence wouldn’t replace actors.

Brad Pitt’s Formula 1 film, Apex, Ryan Reynolds and Hugh Jackman’s Deadpool 3, and the live-action version of Snow White starring Rachel Zegler were all affected by the strike.

Venom 3, Idris Elba’s Heads Of State and the second series of Star Wars spin-off Andor also had to shut down.

One of the few major TV shows that managed to dodge the industrial action was Game Of Thrones spin-off House Of Dragon, which will air its second season in June.

Most of its cast are under the British actors' union, so it carried on as usual.

Cynthia Erivo plays Elphaba in Wicked, and stars alongside Ariana in the two-part screen adaptation of the book and musical.

Normal People star Daisy Edgar-Jones, 25, was also at CinemaCon, talking about her new film Twisters, a sequel to 1996’s Twister.