A dress with 3D-printed petals and other tech news

BBC Click's Lara Lewington looks at some of the week's best technology stories including:

  • Hackers steal $41m (£31m) worth of Bitcoin in a major crypto-currency heist

  • Google unveils a new range of Pixel 3a smartphones

  • Model Jourdan Dunn wears a dress at New York's Met Gala made of 37 3D-printed petals

See more at Click's website and @BBCClick.