Christina Aguilera is seen using a mobility scooter at Disneyland due to ‘minor knee injury’ while celebrating daughter Summer’s ninth birthday

Christina Aguilera was spotted riding a mobility scooter through Disneyland on her family daughter Summer’s ninth birthday celebration.

As she celebrates her little girl turning another year older at the theme park in Anaheim, California the singer, 42, wore a white and pink tie-dye t-shirt with “we heart Summer” written across her chest.

A source close to the Burlesque star revealed she used the power wheelchair due to a minor knee injury, to “rest it out to make sure it doesn’t get any worse.”

The insider also noticed that TMZ that the injury didn’t stop her from having a “blast” in the happiest place on earth.

Her longtime partner, Matthew Rutler, and many of their family and friends also wore the same tie-dye shirts as Aguilera.

The Dirrty hitmaker — who also celebrated her daughter’s birthday the day before by taking her on stage in a jam-packed performance — looked like the cool mom as she accessorized a nylon baseball cap and skinny retro shades.

Happiest Place on Earth: Christina Aguilera spent the day at Disneyland with her family on Thursday

Riding a scooter: The singer, 42, was seen riding a scooter and wearing a 'We heart Summer' T-shirt to celebrate her daughter Summer's ninth birthday at the theme park in Anaheim, California

Riding a scooter: The singer, 42, was seen riding a scooter and wearing a ‘We heart Summer’ T-shirt to celebrate her daughter Summer’s ninth birthday at the theme park in Anaheim, California

Under the cap, she tied up her platinum blonde waves in an effortlessly stylish ponytail.

For their outing, she looked comfortable yet chic in black cargo pants and casual tennis shoes.

She also accessorized with a pair of silver hoop earrings and a chunky chain-linked choker that matched the hardware on her sunglasses.

As for makeup, she opted for a light glam while rocking a mauve matte lip.

She also rocked subtle yet sultry eye makeup with full, fluttery lashes and a light sprinkling of liner.

At one point, she was seen enjoying the Alice in Wonderland ride with her longtime partner and musician, 38.

The couple started dating in 2010 after Aguilera’s divorce from her ex Jordan Bratman.

The former couple – who share 15-year-old son Max – married in 2005 and announced their breakup in October 2010 after months of separation.

Minor Injury: According to TMZ, a source revealed that she was riding the electric wheelchair due to a minor knee injury

Minor Injury: For their outing, she looked comfortable yet chic in black cargo pants and casual tennis shoes. According to TMZ, a source revealed that she was riding in the electric wheelchair due to a minor knee injury

Minor Injury: According to TMZ, a source revealed that she was riding the electric wheelchair due to a minor knee injury

Comfortable yet chic: For their outing, she looked comfortable yet chic in black cargo pants and casual tennis shoes

Matching Gear: With her partner, Matthew Rutler, and many of their family and friends, she wore the same tie-dye shirts to match their group

Matching Gear: With her partner, Matthew Rutler, and many of their family and friends, she wore the same tie-dye shirts to match their group

Celebrating her daughter's birthday: The Dirrty hitmaker ¿ who celebrated her daughter's birthday the day before by taking her onstage during a packed performance ¿ looked like the cool mom while accessorizing with a nylon baseball cap and thin retro shades

Celebrating her daughter’s birthday: The Dirrty hitmaker – who celebrated her daughter’s birthday the day before by taking her onstage at a packed performance – looked like the cool mom while accessorizing with a nylon baseball cap and thin retro shades

Effortlessly stylish: Underneath the cap, she tied up her platinum blonde waves in an effortlessly stylish ponytail

Cool accessories: She also accessorized with a pair of silver hoop earrings and a chunky chain-linked choker to match the hardware on her sunglasses

Effortlessly stylish: Underneath the cap, she tied up her platinum blonde waves in an effortlessly stylish ponytail. She also accessorized with a pair of silver hoop earrings and a chunky chain-linked choker to match the hardware on her sunglasses

With her longtime partner: At one point she was seen enjoying the Alice in Wonderland ride with her longtime partner and musician, 38 ¿ who she started dating in 2010 after her divorce from ex Jordan Bratman

With her longtime partner: At one point she was seen enjoying the Alice in Wonderland ride with her longtime partner and musician, 38 – who she started dating in 2010 following her divorce from ex Jordan Bratman

Always glamorous: As for makeup, she opted for a light glam while rocking a mauve matte lip

Stunning: She also rocked subtle yet sultry eye makeup with full, fluttery lashes and a small amount of liner

Stunning: As for makeup, she opted for a light glam while rocking a mauve matte lip. She also rocked subtle yet sultry eye makeup with full, fluttery lashes and a light amount of liner

Happily engaged: After about four years of dating, Aguilera and Rutler got engaged on Valentine's Day in 2014. That same year, they welcomed their daughter Summer Rain, but also revealed that they were in no rush to get down the aisle

Happily engaged: After about four years of dating, Aguilera and Rutler got engaged on Valentine’s Day in 2014. That same year, they welcomed their daughter Summer Rain, but also revealed that they were in no rush to get down the aisle

After about four years of dating, Aguilera and Rutler got engaged on Valentine’s Day in 2014.

That same year, they welcomed their daughter Summer Rain, but also revealed they were in no rush to get down the aisle.

In 2016, Aguilera spoke to Women’s Health about wedding planning and also gushed about their daughter.

“We discuss (wedding planning) when we’re snuggled up in bed, but it’s a casual conversation,” she said at the time.

Of their daughter, she said, “I swear, if I hadn’t called her Summer I would have called her Joy, because she just lights up a room and she lights up brightness and happiness.”