Alexa Chung on Inspiring the Topshop Unique Collection & THAT Stella McCartney Party

'Is that Alexa Chung on the catwalk?!' someone whispered at today's Topshop Unique collection. A slender brunette with slightly scruffy, centre-parted hair and cat-winged eyeliner strode towards us wearing a luxe boiler suit in black silk velvet. Nope, it was just a model working a gorgeous piece of the Autumn Winter 2012 collection, but the similarity was undeniable. In fact, the buttoned-up shirt dresses, pajama silk shirts and bulky coats that followed all screamed Chungness.

In fact, Alexa was sitting on Topshop's front row eyeing up the catwalk offerings from inbetween an Olivia Palermo/Pixie Geldof sandwich. She looked typically-understated-but-devastatingly-cool in an ivory blouse with ruffled collar tucked into a pair of flared jeans under a navy blue coat, accessorised with a colour-popping Loewe Belen bag and blue ballet pumps.

‘I thought that was my idea!’ she trilled when Grazia Daily asked what she made of that eveningwear jumpsuit. ‘The girl wearing it did look like me…and she had my eyeliner. And my parka jacket!’

Us mere mortals can only dream of inspiring an entire collection, but surely Alexa gets used to seeing copy-cats everywhere she goes. ‘It makes it easy for me because I can imagine what I’m going to look like in them.’ Well, that’s handy.

Of course, we couldn’t resist asking about that fabulous Stella McCartney party last night. As you’ve seen from the pictures we tweeted last night, Alexa bravely volunteered to be hypnotised by a magician. ‘I levitated and was on a bad of daggers. It was really good fun,’ she confessed. But wasn’t that err, slightly nerve-wracking? ‘I was pretty scared before, but nervous more that I had to perform in front of Anna Wintour and Rihanna.’ We sure wouldn’t have wanted to be in her shoes for that one.