“Happy Birthday Eva and Erika,” a crowd of friends and family echo as they sing happy birthday to the twin girls on Saturday.
This birthday wasn't just a standard celebration of another year since their birth, this occasion was a much more important milestone for the twins.
Eva and Erika were born conjoined at the chest and had to undergo a risky 17 hour surgery to separate them.
The girls shared their digestive system, uterus, liver, bladder and a third leg and after their surgery the 2 year olds were able to finally pursue their own separate interests.
Before the operation, Erika was almost half the size of her sister Eva, which caused doctors to fear for Eva's health.
Eva completed the operation with a large intestine, small intestine and colon, whereas her sister Erika only has a small intestine.
The girls were discharged from Packard Children's Hospital a few months after their surgery and have been back at home with their parents behaving like normal toddlers.
"Neither girl seems to have trouble adjusting," said Packard Children's child psychiatrist Michelle Goldsmith, MD, who has worked with the toddlers. "They're both rolling with what's going on very well."
That's why this birthday party meant so much to the family.