Alessandra Ambrosio shows off toned midsection in Los Angeles ahead of son Noah’s 12th birthday celebration: ‘My love for you is endless!’

Alessandra Ambrósio sported athleisure attire while running errands in West Hollywood on Tuesday.

The 43-year-old Brazilian bombshell flashed her taut tummy in black leggings and a matching sports bra beneath a grey-plaid shirt and black Nike sneakers.

Alessandra – who was glued to her iPhone – also wore sunglasses and she toted a white-weaved handbag.

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Ambrósio – who diligently paid her parking meter – appeared to be make-up free and she scraped her brunette locks into a messy updo for her daytime outing.

That same morning, the CAA Model surprised her son Noah Phoenix Mazur with a small chocolate cake, quesadillas, and a green smoothie in bed in honor of his 12th birthday.

Alessandra Ambrósio sported athleisure attire while running errands in West Hollywood on Tuesday

‘Happy birthday, love of my life, my beautiful and sweet boy!’ Alessandra – who boasts 19.5M social media followers – gushed via Instastory (translated from her native Portuguese).

‘I love you infinitely and I can’t believe you’re turning 12!’

Ambrósio also posted a video montage of happy memories of her youngest child set to Stevie Wonder’s 1972 hit You Are The Sunshine Of My Life.

Little Noah’s big sister Anja Louise Mazur posted a cute Instagram slideshow of the pair.

‘Happy birthday 12-year-old. [You’re] my favorite in this entire universe and no one could ever take your place in my heart,’ the 15-year-old influencer – who already has 158K Instagram/TikTok followers – wrote.

‘You mean so much more to me than you know. [I] would take a bullet for you any day, seriously. [You’re] the coolest brother I could ever ask for with the biggest heart and the most stubborn and sassiest attitude, please never change. Love you forever!’

The ISDIN brand ambassador’s ex-fiancé Jamie Mazur Instastoried numerous snaps of their youngest child including the second chocolate cake he indulged in at a restaurant.

The 43-year-old Re/Done denim co-founder wrote: ‘Happy birthday to the kindest soul. You make my life complete.’

The 43-year-old Brazilian bombshell flashed her taut tummy in black leggings and a matching sports bra beneath a grey-plaid shirt and black Nike sneakers

Alessandra – who was glued to her iPhone – also wore sunglasses and she toted a white-weaved handbag

Ambrósio – who diligently paid her parking meter – appeared to be make-up free and she scraped her brunette locks into a messy updo for her daytime outing

That same morning, the CAA Model surprised her son Noah Phoenix Mazur with a small chocolate cake, quesadillas, and a green smoothie in bed in honor of his 12th birthday

Alessandra gushed via Instastory: ‘Happy birthday, love of my life, my beautiful and sweet boy! I love you infinitely and I can’t believe you’re turning 12!’

Ambrósio also posted a video montage of happy memories of her youngest child set to Stevie Wonder’s 1972 hit You Are The Sunshine Of My Life

Little Noah’s 15-year-old sister Anja Louise Mazur posted a cute Instagram slideshow of the pair: ‘Happy birthday 12-year-old. [You’re] my favorite in this entire universe and no one could ever take your place in my heart’

The ISDIN brand ambassador’s ex-fiancé Jamie Mazur Instastoried numerous snaps of their youngest child including the second chocolate cake he indulged in at a restaurant

The 43-year-old Re/Done denim co-founder wrote: ‘Happy birthday to the kindest soul. You make my life complete’

Alessandra ended her decade-long relationship with Jamie (pictured April 8) in 2018, and she’s been single since ending her two-year romance with Wilhelmina Model Richard Lee shortly after January 2023

Career-wise, Ambrósio flew to Italy’s fashion capital Milan to attend the April 25th launch of Omega Watches’ new Speedmaster collection

Alessandra ended her decade-long relationship with Jamie in 2018, and she’s been single since ending her two-year romance with Wilhelmina Model Richard Lee shortly after January 2023.

Career-wise, Ambrósio flew to Italy’s fashion capital Milan to attend the April 25th launch of Omega Watches’ new Speedmaster collection.

The Amaffi paid partner keeps busy running her second swimwear brand GAL Floripa, which she co-founded with her younger sister Aline and best friend Gisele Cória in 2019.

Alessandra – who became a US citizen in 2020 after 24 years of living in the States – previously ran her eponymous swimwear line ále by Alessandra from 2014-2018.

Ambrósio broke out on her own after officially retiring her Victoria’s Secret Angel ‘wings’ with the San Francisco bra brand in 2017 after 12 years.