Taking on the fast fashion industry, the second most polluting industry in the world, Kiell Smith-Bynoe welcomes back Reduce Reuse Recycle week. First, the sewers attempt a quilted bag using scraps sandwiched between sheets of organza.

In the Transformation Challenge, the sewers come face to face with the idea of the mountains of discarded clothes created every day by the fashion industry. In 90 minutes they are tasked with cherry-picking items from textile waste to create a brand new item in a colour palette of their choosing.

Finally, in a Sewing Bee first, the sewers take wedding dresses and repurpose them in to an outfit fit for a party. They cut, dye and even paint the dress and produce a range of ingenuous garments.

It's Children's Week, and Kiell Smith-Bynoe invites the seven remaining sewers to follow the pattern for a child's sequined bomber jacket. With sequins proving tricky to tackle and ribbing around the cuffs and neck, the sewers' skills will once again be under the microscope.

For the Transformation Challenge, the sewers are asked to make animal themed fancy dress for a toddler from beach towels with eye-catching results.

Finally, the Sewing Bee welcomes mini models for the Made-to-Measure. The sewers' challenge is to unearth a childhood photo and use it as inspiration to create a brand new outfit to fit their mini models.

Who will breeze through it like child's play, and who will be on the naughty step?