The Australian supermodel walked for the British designer - who has four children with husband Alasdhair Willis - at Paris Fashion Week and spotted a potential future love interest for Flynn, her nine-month-old son with spouse Orlando Bloom.
She said: "It's funny because Stella's little girl Reiley is almost the same age as Flynn so watch out - Flynn might start dating her."
The 28-year-old beauty also admitted combining work with raising Flynn can be difficult while he is still so young.
She told People.com: "I'm still breastfeeding so I have to express milk and send it back to Flynn and then try and see him on my breaks.
"I was up for hours last night as he's teething. And when he's crying, he just wants Mommy! It's such hard work."
However, Miranda admits her husband is a great help with the baby as he is very hands-on.
She added: "He loves changing diapers! But seriously, he's very hands on. I really couldn't ask for a better dad."
Despite her praise for Orlando, Miranda insists the couple have no plans for any more children in the near future.
Asked if they are ready to expand their family, she said: "Not yet but let's see."