The couple rose to Internet fame in August, when photos showing Ashley’s reaction to the quadruplet news went viral.
Ashley and Tyson Gardner had been trying to have a baby for eight years, and finally saved up enough money for in-vitro fertilization this year.
Twin numbers have steadily increased since the 1980s.
This is due in part, to the number of couples who have had and are having fertility assistance.
The festival is an annual gathering of twins from around the country--an opportunity to meet and mingle with other twins from around the country.
The Gardners have appeared on several talk shows since the August ultrasound photos were released, and they’ve established a Facebook page and website for fans to track their fertility journey.It was the start of 2016 when full-time mum Zoe was rushed to from the family home in Lossiemouth, Moray, to Raigmore hospital in Inverness for an emergency c-section.Tiny Erin and Leah were brought into the world on January 25 - exactly the same date that Charlotte and Isabelle were born in 2008.When Carrie and Craig Kosinski adopted their first set of twins just months after marrying, the Wisconsin couple never imagined they’d eventually have two more sets — all with the same birthday.pregnant, asked her if she and her husband would adopt her child and they agreed. "We wanted to adopt them to make them a permanent part of our family.