How do Barbie dolls stay relevant in 2016? The iconic toy, first sold in 1959, has experienced a steep decline in sales in recent years.

In 2009 Barbie accounted for more than a quarter of doll sales in the US. Six years later that figure had fallen to less than a fifth.

In 2016 Barbie received a dramatic makeover, as Mattel unveiled a new range including three optional body shapes – petite, tall and curvy – as well as seven different skin tones and 24 hair styles.

Aside from Mattel, a number of independent parties are endeavouring to extend Barbie's appeal, while also sending a message. Last month, three mothers from Pittsburgh launched 'Hello Hijab' - a range of small hijab's for Barbie-sized dolls.

Gisele Fetterman, Safaa Bokhari, and Kristen Michaels said they hoped their product, priced at $6 (£4.60) a hijab, would teach children about inclusiveness.