By Mark Duell Reaching speeds of up to 100mph and flying only yards apart, these breaktaking photographs show how two nine-year-old girls today became the world’s youngest formation wingwalkers. Rose Powell, of Wandsworth, south-west London, and Flame Brewer, of Kensal Rise, north-west London, took to the skies on two of their grandfather’s vintage biplanes over Gloucestershire. The cousins became the third generation of their families to wingwalk on the Boeing Stearman aircraft when they took off from RFC Rendcomb airfield, near Cirencester. Scroll down for video Exciting: Rose Powell, of Wandsworth, south-west London, and Flame Brewer, of Kensal Rise, north-west London, took to the skies on two of their grandfather's vintage biplanes over Gloucestershire
@highlight
Rose Powell and Flame Brewer took to the skies in Gloucestershire
@highlight
Cousins wingwalked on two of their grandfather’s vintage biplanes
@highlight
Third generation of their families to wingwalk on Boeing Stearman
@highlight
Inspired by plight of friend, six, with Duchenne Muscular Dystrophy
In awe: @placeholder (left) said that the wingwalking 'felt like we were birds soaring over the neighbourhood¿