MIRROR MIRROR (PG).

Family/Comedy/Romance/Drama/Action. Julia Roberts, Lily Collins, Armie Hammer, Nathan Lane, Jordan Prentice, Martin Klebba, Ronald Lee Clark, Danny Woodburn, Joe Gnoffo, Mark Povinelli, Sebastian Saraceno, Robert Emms, Mare Winningham, Sean Bean. Director: Tarsem Singh Dhandwar.

Julia Roberts has a blast as the pantomime villainess in Mirror Mirror, a comedic reworking of the classic fairy tale Snow White.

The Oscar-winning actress vamps, pouts and flounces around in fabulous frocks as the wicked Queen, and provides the droll voiceover that lays the foundations of the familiar and rickety plot.

Mirror Mirror is an effervescent and occasionally uproarious romp, which references the familiar elements including an enchanted looking glass and a poisoned apple.

Lily Collins, left, and Armie Hammer are bland as the much-abused heroine and her gallant prince, whose chaste love blossoms in adversity.

However, Roberts and Nathan Lane are a hoot, milking generous laughs from Melissa Wallack and Jason Keller’s uneven script, which strives for but falls short of the dazzling irreverence of The Princess Bride.

Bizarrely, a Bollywood-style song and dance number plays over the end credits as the film-makers’ attempt at a happy ever after.

We’re not convinced.