Christina Aguilera reveals she needed FOUR people to help her move in her gown while filming elaborate Menulog ad

Christina Aguilera has revealed what happened behind the scenes during the filming of her new opera-inspired Menulog ad.

The expensive advert, which was released Down Under in October, features the pop star and US rapper Latto performing a duet inspired by Menulog’s jingle Did Somebody Say.

During the clip, Christina, 42, and Latto, 24, are seen in dramatic opera-themed costumes as they waltz through the interior of a palace as a gaggle of servants attend to their every wish.

Speak with Today Host Sarah Abo this weekend, Christina admitted it was physically challenging to perform in her costume.

‘My dress weighed a million pounds. I had to have four people help me carry it around,” the Fighter hitmaker revealed during a backstage interview at her Melbourne show on Saturday night.

Christina Aguilera (right) revealed she needed FOUR people to help her move in her dress while filming an extended Menulog advert alongside Latto, 24, (left)

The six-time Grammy winner had only positive things to say about her co-star Latto, who performed a rap about Menulog while Christina sang operatic notes behind her.

‘Latto was great. She had a great energy to work with. So much fun, we laughed the whole time,” she mused.

Christina has gone to great lengths to promote her Australian sponsor Menulog, after wearing a custom-made handbag inspired by the delivery app ahead of her flight to Australia last week.

'My dress weighed a million pounds.  I had to have four people help me carry it around,” the Fighter hitmaker revealed to Today's Sarah Abo on Saturday night.  Pictured: Christina wearing her extremely heavy dress on set

‘My dress weighed a million pounds. I had to have four people help me carry it around,” the Fighter hitmaker revealed to Today’s Sarah Abo on Saturday night. Pictured: Christina wearing her extremely heavy dress on set

The six-time Grammy winner had only positive things to say about her co-star Latto, who performed a rap about Menulog while Christina sang operatic notes behind her

The six-time Grammy winner had only positive things to say about her co-star Latto, who performed a rap about Menulog while Christina sang operatic notes behind her

The American pop star played her first concert Down Under in 15 years on Saturday, performing at the government-sponsored music festival Always Live at Melbourne's Flemington Racecourse.

The American pop star played her first concert Down Under in 15 years on Saturday, performing at the government-sponsored music festival Always Live at Melbourne’s Flemington Racecourse.

The American pop star played her first concert Down Under in 15 years on Saturday, at the government-sponsored music festival Always Live, at Melbourne’s Flemington Racecourse.

From November 24 to December 10, more than 165 artists will rock more than 60 electrifying events in Melbourne and beyond.

The 17-day live music program takes place across Victoria and includes performances from British singer Jessie Ware and AB Original.

Melbourne-based rock band Amyl and the Sniffers, British-Indian musician Jai Paul and Peter Garrett are among more than 60 events on the programme.

The full list of performances can be found at Alwayslive.com.au.