Weir is a sailor[2] and has been described by as "Australia's glamour girl in the world of sailing".[5] She started sailing as an eleven-year-old at the Elwood Sailing Club.[3] She was coached by Lex Bertrand[5][6] and is now coached by Laura Baldwin who became her coach in 2011.[6] She has a sailing scholarship with the Victorian Institute of Sport,[5][6][7] and is a member of the Sandringham Yacht Club.[6] Part of her past training included being thrown overboard by her then coach into Port Phillip Bay.[5][6] It also included trying to collect tennis balls, ping pong balls and straws that were thrown into the water by her coach while not tipping her boat over.[5][6] She arrived in London a month before the start of the Games in order to better prepare.[3][6][7]
Weir won a World Championship[8] in 2004 in the Laser Radial class.[6] She competed at the 2008 Summer Olympics in the three-crew Yngling team, where she finished tenth alongside teammates Karyn Gojnich and Angela Farrell.[5][6][7] She originally was not named to the team, only making the event after another sailor injured herself in a mountain biking accident.[6]
At the 2011 ISAF Sailing World Cup in Melbourne, Weir finished third.[9] In 2012, she spent three months competing in Europe.[7] At the 2012 ISAF Sailing World Cup in the Netherlands, she came in first in round five in the Laser Radial class.[9] At a 2012 ISAF Sailing World Cup event, she came in second.[9] At the 2012 Skandia Sail for Gold Regatta, she finished eighth in the Women's Laser Radial class.[4]
Weir was selected to represent Australia at the 2012 Summer Olympics in sailing in the Women's Laser Radial class event.[2][3][5][7][10]
