You may have found yourself doing a double take last weekend when the 2015 Twins Plus Festival was held to honour the marvel of mutiple birth . Thousands of twins converged in Melbourne for the biggest gathering of twins ( plus higher number multiples such as triplets , quadruplets and above ) in the southern hemisphere . Up to 3000 people - twins , higher number multiples , and their families and friends - attended the event on , Sunday 22 March at Caulfield Racecourse , southeast Melbourne . Scroll down for video . Australia 's oldest identical triplets Florence , Betsy and Dorothy , aged 75 , at the 2015 Twins Plus Festival . Florence Welsh said she could n't imagine life without her siblings : 'It would be devastating . We 're very close , we finish each others sentences all the time and we 're always checking up on each other ' Up to 3000 people - twins , higher number multiples , and their families and friends - attended the event . Florence Welsh , one of Australia 's oldest triplets , attended Twins Plus with her sisters Betsy and Dorothy , aged 75 . She told Daily Mail Australia she could n't imagine life without her siblings . 'It would be devastating . We 're very close , we finish each others sentences all the time and we 're always checking up on each other , ' she said . Welsh said it was incredible to see so many twins together in one place . The festival offered something for everyone , with rides for all ages , celebrity twin meet-and-greets , twin-talent performances and even shopping and exhibits unique to twins . There was even a scientific side to the event , with researchers scouting for recruits to use in projects that will examine the science and psychology of life for multiple birth siblings . The festival offered something for everyone , with twin-talent shows , jumping castles and celebrity-twin meet and greets . The festival is organised by the the Australian Twin Registry and the Australian Multiple Birth Association . Festival Chairperson Karen Willetts said while the focus is on having a good time , it is also about supporting multiple birth families . Associate professor of the Australian Twin Registry Jeff Craig said researchers were on their feet all day . 'There was a vast number of twins who had come purely to speak with the researchers . There were teams conducting studies on epilepsy , cardiovascular disease , and autism through the frame of multiple birth siblings , ' he said . NSW identical twin surf lifesavers Stuart and Phillip Daniels attended the festival for the fourth time – and they 've been to other twin festivals around the world . 'Twin festivals are like nothing else we 've been to , and we have travelled extensively around the world . We all have so much in common as twins and it 's great to share stories about our twin lives . Once you go to one , you go back again and again as they are so interesting and fun , ' said Phillip Daniel . The event is the biggest gathering of twins ( plus higher number multiples such as triplets , quadruplets and above ) held in the southern hemisphere . There was even a scientific side to the event , with researchers scouting for recruits to use in projects that will examine the science and psychology of life for multiple birth siblings . A number of competitions are held during the event to name the most alike and least alike siblings in a number of categories . 'There was a vast number of twins who had come purely to speak with the researchers , ' Associate professor of the Australian Twin Registry Jeff Craig said . Festival Chairperson Karen Willetts - herself a mother of 13-year-old twins - said while the focus is on having a good time , it is also about supporting multiple birth families . 'Life in families with multiples can sometimes be difficult because of the extra strain on finances , added stress on relationships , and difficulties with educational outcomes , ' she said . 'We want families with multiples to know there is a lot of support around them and they 're not alone . ' There were teams conducting studies on epilepsy , cardiovascular disease , and autism through the frame of multiple birth siblings . 'Life in families with multiples can sometimes be difficult because of the extra strain on finances , added stress on relationships , and difficulties with educational outcomes , ' Festival Chairperson Karen Willetts said . She added : 'We want families with multiples to know there is a lot of support around them and they 're not alone ' The event also allows 'multiple birth families to connect and to celebrate their unique lives ' according to the Twins Festival website .
one people - twins , higher number multiples , and their families and friends - attended the event on Sunday . The festival attracted twins from over Australia , including the oldest identical triplets Betsy , Florence and Dorothy . There 's was even a scientific side to the festival , with academics scouting for recruits to use in research projects . Festival Chairperson Karen Willetts said the festival is also about having fun and supporting multiple birth families .