Modest fashion has been steadily gaining more global recognition over the past decade, with longer hemlines spotted on the runway. It’s now estimated to be worth around $300 billion.

But modest fashion isn’t just religious coverings, loose dresses, or even your grandmother’s cardigan. At Modest Fashion Week in Istanbul there was everything from faux fur, to gold silk and platform heels. Megan Lawton, a BBC reporter in Toronto, has been looking into how modest fashion has shifted outside the leading markets in Iran, Turkey and Saudi Arabia to the US and Australia. She’s spoken to the founders of Reflective - an online marketplace for modest clothes.

We also hear from Nawal Sari, a Muslim model and content creator in Australia, about how the modest-friendly options have shifted over the years - and how authentic some marketing of the clothing is.

Instagram: @bbcwhatintheworld WhatsApp: +44 0330 12 33 22 6 Email: whatintheworld@bbc.co.uk Presenter: Hannah Gelbart Producers: Emily Horler, Mora Morrison and Benita Barden Editor: Verity Wilde

Sierra Leone’s capital Freetown and other cities have been suffering blackouts for weeks. It’s disrupted hospitals and daily life for many. Most of Freetown’s power comes from a Turkish ship floating off the country’s coast - and they’ve massively reduced electricity supply to the city because of unpaid bills. Karpowership is one of the world's biggest floating power plant operators, with several African states relying on it for electricity.

BBC journalist Chimezie UcheAgbo explains where Sierra Leone gets its power and what’s causing the blackout. Fatmata Gassim (19), an engineering student in Freetown, tells us how the blackout has affected her. We also hear about power outages in Ghana (from the BBC’s Favour Nunoo in his car) - and the rocketing cost of electricity in Nigeria. Irene Leigh (23) sends us a message about how her company, EasySolar, is helping people in Sierra Leone find alternative ways to get their power.

Instagram: @bbcwhatintheworld WhatsApp: +44 0330 12 33 22 6 Email: whatintheworld@bbc.co.uk Presenter: Hannah Gelbart Producers: Julia Ross-Roy, Emily Horler and Mora Morrison Editor: Verity Wilde

President Biden has just signed a law that says TikTok’s Chinese owner, ByteDance has nine months to sell the app or it will be blocked in the US. We hear what TikTok users in the US think about the ban - and how it would affect them. Liv McMahon from the BBC tech team explains why the US government has done this, how TikTok has responded - and why it won’t be easy to sell the app. And the BBC’s Kerry Allen describes the origins of TikTok in China and the Chinese reaction to the ban.

Instagram: @bbcwhatintheworld WhatsApp: +44 0330 12 33 22 6 Email: whatintheworld@bbc.co.uk Presenter: Hannah Gelbart Producers: Julia Ross-Roy, Benita Barden and Mary Isokariari Editor: Verity Wilde