When you ask Mollie Syrigos about her 13-month-old baby boy Theodore she lights up like any proud mum and can’t help but gush about his achievements.

“Oh my gosh, he is very energetic - an extremely cheeky and happy little boy. He’s like a little sponge really. He absorbs things so quickly. He is such a fast learner. He is just awesome, so adorable,” she says.

But Mollie is no ordinary mum. At 13 years old Mollie became one of Australia’s youngest mums when she fell pregnant with Theodore.

And now the 15-year-old Melbourne student is set to become a mother-of-two when she gives birth again in December. Theodore’s dad and Mollie’s partner, Oscar Wilks, is one year older at 16.

Mollie said she and Oscar – who live in Surry Hills with Oscar’s father - were both very excited about the second pregnancy, although it wasn’t planned.

“I know it will a huge challenge but I’m prepared for that challenge. When you love something so much challenges sort of make you stronger and I’m ready for the challenges and very excited for the new baby to come,” she told Nine.com.au.

Becoming a mum for the first time was “a huge life shock”, Mollie says, adding that she remembers exactly where she was when she first found out she was pregnant with Theodore.

Mollie and Oscar with Theodore after he was born.

“As teenagers we thought it was pretty cool to camp out in our garage which was what me and Oscar were doing. I was just sitting in the garage and I came back with the test and I showed Oscar and we were just in shock,” she said.

“He was definitely a lot more shocked than I was. He was running around panicking. He didn’t know what to do.”

Right away, Mollie said she was under pressure from family members to get an abortion.

“For a couple of months I didn’t have much support. Everyone was trying to persuade me to get an abortion which wasn’t too fun, it was very difficult actually,” she said.

“But I stuck to it because I couldn’t ever imagine getting rid of such an amazing thing. I had no doubt in my mind about this baby I was carrying, which is now a little 13-month-old.”

Like any teen parents, Mollie and Oscar have had to endure the judgement of others.

“Still to this day we get dirty looks and rude comments, people messaging me on Facebook and calling me.”

“But I don’t really mind. It’s totally worth the judgement to be honest.”

Mollie and Oscar live with Oscar's dad, who has multiple sclerosis, and help care for him.

The issue of teen parenting was thrown into the spotlight earlier this year when new Sydney parents, Jayden Lavender, 14, and Jenifer Morrison, 15, fled Nepean Hospital with their three-day-old baby girl, sparking a police manhunt.

According to NSW Health, 2641 teenagers between the ages of 15 and 19 became mums in 2015.

Mollie said teen parenting was very common and all parents should be given a chance.

“Just because I’m physically 15, my head is in a different place. I feel a lot older than 15,” she said.

“No age defines how well you parent. There’s 30-year-old ice junkie mums out there. I’m doing as best as I can and my son is happy and so is my partner and I think that’s the main thing.”

Despite Mollie’s schooling stalling at a very young age - she effectively dropped out of school just as she was about to start Year 7 – the young mum said her education was now more important than ever to her.

This year, Mollie started studying at Swinburne University of Technology’s secondary school classes for young mothers. She is taking Year 11 subjects also doing a business course.

Mollie said planned to continue her studies for as long as possible before her second baby was born, and then return at a later date.

“I’d love to go to university and follow through with my education and be a good role model for my kids,” she said.

Although she wasn’t sure yet what area she would like to develop a career in, Mollie said she had a lot of ideas.