Sylvia Jeffreys has revealed the latest milestone that her 11-month-old son Oscar has picked up while exploring the world.

She shared it on Instagram, showing off that he had taken a sweet snap of himself.

"Found this in my camera roll. Baby’s first selfie. Impressive for an 11-month-old, but he needs some urgent guidance on angles," she jokingly captioned the pic.

It won't be long until little Oscar is teaching his little brother how to take unflattering photos of mum as Sylvia and her husband Peter Stefanovic announced they were expecting baby number two.

"When you find out you're getting a best bud for life. Oscar's little brother due in April next year. We are so lucky. 💫💫💫" Sylvia captioned the photo.

Sylvia revealed on air that it was a struggle going through IVF but she was grateful that it had made her fall pregnant again.

"We're so thrilled after not the easiest path first time around; we're grateful for this gift, another boy," Sylvia told Today Extra viewers.

"Two boys under two is going to be wild. If you have any advice how to handle the chaos, let me know!"