America's sweetheart: Down syndrome model Madeline Stuart is the toast of NYC after her catwalk debut as fans serenade her with Happy Birthday atop Rockefeller Center

  • Madeline Stuart is the toast of New York after her Fashion Week debut
  • The 18-year-old was sung an early happy birthday at the Rockefeller Center
  • The birthday wishes came after she received a standing ovation at NYFW
  • Madeline's modelling debut was a defining moment in the fashion industry
  • She made history as the second Down syndrome model to walk in NYFW
  • Her goal is to stop discrimination and break down barriers  

Madeline Stuart has the world at her feet.

The inspirational teen made history on Monday as the second Down syndrome model to walk the New York Fashion Week runway - bringing the crowd to a standing ovation. 

The same day she posted a video on her YouTube channel atop the Rockefeller Center as an adoring crowd sung the 18-year-old an early happy birthday.

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Making history: Madeline Stuart gave the crowd a series of high-five's as she made her way down the runway

Making history: Madeline Stuart gave the crowd a series of high-five's as she made her way down the runway

Toast of New York: Madeline was sung an early happy birthday on top of the Rockefeller Center

Toast of New York: Madeline was sung an early happy birthday on top of the Rockefeller Center

In the video Madeline, who will celebrate her 19th birthday on November 13, can be seen smiling as she stands arm-in-arm with an officer who is leading the crowd in song.

As the wind blows through her silky red hair, pulled back in to a ponytail, the Brisbane teen turned to the camera, her face split in to a grin.

'Thank you' she said, as the crowd cheered.

Defining moment: As she modelled a fitted couture gown, Madeline paused to connect with her adoring crowd

Defining moment: As she modelled a fitted couture gown, Madeline paused to connect with her adoring crowd

Role model: Madeline is the toast of New York after making international headlines as the second Down syndrome model to take to the NYFW runway

Role model: Madeline is the toast of New York after making international headlines as the second Down syndrome model to take to the NYFW runway

The video comes after Madeline made headlines around the world when she walked the runway for FTL Moda at New York Fashion Week.

Modelling their Spring 2016 Collection, Madeline stunned in a gold and white couture gown, her long hair twisted in to an elegant up-do. 

As she turned to make her way back down the runway, Madeline held her hand out the crowd in a series of high-five's 

A mother's love: Madeline received a hug from her mother Rosanne during the show's finale

A mother's love: Madeline received a hug from her mother Rosanne during the show's finale

Madeline, who walked the catwalk three times, was joined in the finale by her mother, Rosanne, who hugged her daughter tight.

Rosanne told Daily Mail Australia last month her daughter's success was a testament to the growth of the equality movement and her daughter's unwavering dedication. 

'I think it is time people realised that people with Down syndrome can be sexy and beautiful,' she said.

'We will only continue doing this as long as Maddy is happy doing this. It's only what makes Maddy happy that's important.' 

Breaking down barriers: Roseanne said: 'It is time people realised that people with Down syndrome can be sexy and beautiful'

Breaking down barriers: Roseanne said: 'It is time people realised that people with Down syndrome can be sexy and beautiful'

Happy place: Rosanne, who can be seen watching her daughter on the runway, said Madeline would continue to model as long as it made her happy 

Happy place: Rosanne, who can be seen watching her daughter on the runway, said Madeline would continue to model as long as it made her happy 

Madeline has documented her NYFW journey via social media.

Since her debut as a model a year ago Madeline has amassed nearly 80,000 Instagram followers, more than 3,300 Twitter fans and 471,911 Facebook followers.

In a series of candid photos and tweets, the inspirational model shared the moments that helped shape the future of the fashion industry.

Like a local: Madeline posted a photo of herself hailing one of New York's iconic yellow cabs

Like a local: Madeline posted a photo of herself hailing one of New York's iconic yellow cabs

Centre of attention: Make-up artists, hairdressers and stylists flank the inspirational teen behind the scenes at NYFW

Centre of attention: Make-up artists, hairdressers and stylists flank the inspirational teen behind the scenes at NYFW

On her website, Madeline's journey is described as more than just modelling, instead as a way to change the world.

'This is about creating inclusions, stopping discrimination and breaking down those walls of confinement,' the website reads.

'Modelling is just the vehicle that is letting us do it.

'We want everyone to be loved, after all that is all that truly matters.' 

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