Twins celebrate third birthday 

Source: Channel 9Separated twins Trishna and Krishna leave hospital

After weeks of marking the big days in their young lives, Trishna and Krishna will enjoy a more ordinary celebration on Tuesday.

The formerly conjoined twins, home from hospital five weeks after they had groundbreaking surgery to separate them, are turning three.

Their legal guardian Moira Kelly says it's like a new beginning for them.

The two girls, who were born joined at the head, can now mark small milestones like going to the beach or celebrating their birthday.

"There's been too many big days so this should be a quiet big day," she told the Nine Network on Tuesday.

The girls will have two cakes at their birthday party with Ms Kelly, her adopted sons Ahmed and Emmanuelle, caretaker Maria Mardi and a handful of volunteers from the Children First Foundation.

"We're having a little birthday party and something in their life that's small, because everything's been so big," Kelly said.

"So something small and just something very special."

She said it was amazing to see how many twins were involved in the girls' successful surgery and recovery.

Kelly has a twin brother. Filmmakers working on a documentary about the girls as well as surgeons and medical staff at the Royal Children's Hospital all turned out to be twins as well.

"If you look at how many were involved with the girls in the close-knit circle, nearly every second or third person was a twin or had a twin," she said.

The girls will have regular check-ups at hospital but are recovering well, with Trishna crawling on her own for the first time on Monday.

"What a wonderful world we live in when miracles like this happen," she said.