Christina Aguilera was joined by her biggest fan backstage at her Las Vegas residency at The Venetian resort, which kicked off over the weekend in Sin City.

On Wednesday, the Genie In A Bottle hitmaker, 43, shared photos of herself hanging out with her daughter Summer Rain, nine, just minutes before showtime.

Dressed in a glamorous stage costume, Christina shared sweet moments with her youngest child in her spacious dressing room

In one shot, the vocalist puckered up for the camera while Summer Rain smiled and rested her arms on her mom’s shoulder.

Though opening night went off without a hitch, Christina revealed today that she has come down with the flu and will be rescheduling two upcoming shows.

Christina Aguilera was joined by her biggest fan backstage at her Las Vegas residency at The Venetian resort: her nine-year-old daughter Summer Rain

Her highly-anticipated residency kicked off over the weekend in Sin City

Her doctor ordered ‘rest’ gave her the downtime needed to share Wednesday’s BTS photos with Summer Rain with her fans.

Along with their cozy mother-daughter portraits, the little girl — who Christina shares with fiancé Matthew Rutler — was also photographed saying goodbye to her mom before she made her way to the stage.

Christina looked every bit the glamour girl for opening night while putting on a busty display in a sparkly nude corset.

She styled the sexy one-piece with thigh-high, white, leather boots and layered diamond necklaces.

Christina’s blonde hair was swept to one side and flipped up on the ends to create a retro look.

As she waited for her call time, the Beautiful hitmaker layered up with a white puffer robe that was able to hide her NSFW costume.

The chart-topper captioned the post: ‘Me & Mine [SNOWFLAKE EMOJI]’ in reference to her daughter.

Christina wowed the crowd — and social media — on Saturday night while kicking off her residency at the brand new Voltaire Belle De Nuit located inside The Venetian.

So the news of her illness came as a major disappointment to fans who planned to catch her this upcoming weekend.

The New York native broke the news in a statement shared to her Instagram Story on Wednesday.

‘AFTER WELCOMING ALL OF YOU TO THE NEW YEAR FROM THE STAGE IN LAS VEGAS. I’VE BEEN WELCOMED WITH A NEW YEAR FLU!!!’ she began.

‘I AM SORRY TO SHARE THAT MY TWO SHOWS THIS WEEKEND WILL BE RESCHEDULED WHILE I REST – AND I CANNOT WAIT TO BE BACK ON THAT STAGE IN A FEW WEEKS.

‘I’M INCREDIBLY PROUD OF THIS SHOW AND GRATEFUL FOR ALL OF THE SUPPORT AND LOVE AFTER OPENING WEEKEND! SEE YOU SOON,’ Christina concluded.

Christina Aguilera reveals stunning preview of NYE performance

On Wednesday, the Genie In A Bottle hitmaker, 43, shared photos of herself and Summer Rain hanging out just minutes before showtime.

Dressed in a glamorous stage costume, Christina shared sweet moments with her youngest child in her spacious dressing room

Christina looked every bit the glamour girl for opening night while putting on a busty display in a sparkly nude corset

She styled the sexy one-piece with thigh-high, white, leather boots and layered diamond necklaces

During opening night, Christina flaunted her incredible figure after losing 40lbs over the years in a variety of skimpy looks.

She had over 10 costume changes, selected by stylist Chris Horan, throughout the sold-out show inside the ‘seductively cozy’ 1K-seat key-hole themed theater.

Christina previously said she ‘hated being super skinny’ and has started embracing and ‘loving my new curves’, according to Health.

After years of fluctuating back and forth, she is now maintaining a slender and strong physique while ‘having a booty’.

Her secret has been dedicating herself to a healthy, balanced diet and a rigorous exercise regime.

When she welcomed her son Max, now 15, in 2008, she was subjected to scrutiny over her weight gain.

Two years later, she started losing weight for her role in her 2010 film Burlesque.

However, that same year, her weight fluctuated again while going through a divorce from music composer Jordan Bratman, 46.

Following her son’s birth, she reportedly dropped 40lbs by restricting her daily food intake to 1600 calories and following the Rainbow Diet.

Though opening night went off without a hitch, Christina revealed today that she has come down with the flu and will be rescheduling two upcoming shows

During opening night, Christina flaunted her incredible figure after losing 40lbs over the years in a variety of skimpy looks

As part of her diet, she sticks to a plant-rich regime and consumes brightly colored fruits and vegetables every single day.

She has since given up on dieting and focuses on eating clean now, she revealed to L’Officiel Italia in 2020.

She noted that instead of being restrictive, she tries to consume more of whole foods and less of sugary snacks.

Besides her balanced diet, she also likes to stay very active and do a wide-ranging workout routine to keep fit.

She reportedly enjoys yoga, boxing, strength training as well as cardio exercises and will workout two to five times a week, according to In Touch Weekly.

She has also trained with celebrity fitness coach, Tee Sorge, to incorporate weight lifting and cardio to maximize calorie burn and maintain her curves.

In 2008, her trainer revealed to Glamour that she worked out ‘up until she was eight months pregnant and then started back up a few months after [her son] Max was born’.

In February 2012, Aguilera spoke to Marie Claire and said she is now at peace with her figure. She said she blocks out all the noise and only cares about feeling good in her own skin.

‘I’ve been through my highs, I’ve been through my lows,’ she said at the time. ‘I’ve been through the gamut of all things in this business. Being too thin. Being bigger. I’ve been criticized for being on both sides of the scale.’

Christina Aguilera visits Melbourne Zoo with fiance Matt Rutler

Her secret has been dedicating herself to a healthy, balanced diet and a rigorous exercise regime; seen right in November 2011

After years of fluctuating back and forth, she is now maintaining a slender and strong physique while ‘having a booty’

At the end of the day, she said the only opinion she pays attention to is her own.

‘It’s noise I block out automatically,’ she added. ‘I love my body. My boyfriend loves my body. My son is healthy and happy, so that’s all that matters to me.’

She noted that she also stopped weighing herself and quit restricting herself.

‘When I worked on Burlesque, I lost so much weight that I was too skinny,’ she said. ‘I don’t weigh myself — it’s all about how I feel in my clothes.

‘What looks good on one person might not look good on another body type,’ she added.

‘I happen to be very confident in my own skin,’ she continued. ‘It takes time to get to that place, but it’s all about embracing yourself and your body.’