Nemo is set to wear “one of the biggest inflatable dresses ever” at a performance in London. The ‘Eurovision Song Contest’ winner – whose full name is Nemo Mettler – is set to play this weekend at the Royal Academy of Arts for fashion label Harri’s upcoming presentation, and the brand has created a special ensemble for the event. Founder Harikrishnan Keezhathil Surendran Pillai told Women’s Wear Daily: “This couture piece was meticulously handcrafted for more than 300 hours by six people. “It is quite an enormous piece, probably as big as half the size of a bus.” Swiss singer Nemo – who is non…