Georgia May Jagger is rocking. The genetically blessed 20-year-old with the famous gap-toothed smile and even more famous parents is literally swaying in front of me as we chat aboard Sunglass Hut's pop-up floating store, a converted barge moored in the rocky Sydney Harbour under grey skies and near the harbour bridge. Each time a ferry goes past, the store rocks a little more but while I'm feeling increasingly woozy, Jagger remains sprightly and composed.
She's been up since 5am - in hair and makeup, doing interviews all morning - but the easygoing daughter of Mick Jagger and Jerry Hall is fresh-faced in a palm-tree printed short suit by Australian designer Lisa Ho, her strappy silver heels planted firmly on the ground.
Jagger is in town to promote the floating store in her capacity as the "global ambassador" of the brand. That means appearing in campaigns - the latest also features her model/musician boyfriend Josh McLellan, also in town with her ("it was quite funny because we were photographed in this little box, falling out") - blogging each month and going anywhere that Sunglass Hut is, and lending her star power. It also means a lot of sunglasses. Her collection is growing, says Jagger, and her current favourites are tinted aviator Ray-Bans.
She's working her role as ambassador: she's snapped at the airport arrival gate in Dolce & Gabbana gold frames, wearing Miu Miu frames at Bondi Beach and arriving at the evening launch party by luxury speedboat in the gold D&Gs again.
Jagger began modelling at the age of 15, with a pedigree that perhaps predestined her career. Her mother, Jerry Hall, was one of the biggest supermodels of the 1970s, and her father, well, he's Mick Jagger. She inherited Jerry's full head of hair and Mick's full lips, and, combined with her imperfect smile, her look has seen her go on to feature in all the top magazines - various Vogues around the world, i-D, Harper's Bazaar. She was dressed as a debutante by artist Gillian Wearing for the magazine Pop, and was chosen to appear in the fashion segment of the London Olympics closing ceremony. (At "only" 1.7m, she appeared tiny next to models like Kate Moss, Naomi Campbell and Karen Elson.)
But does she ever tire of people asking about her parents, or feel pressured by the cliche of being a rock star's daughter? She seems very understanding and low-key about it all. "I don't feel any pressure or anything like that. I think that's something that other people think about me. I mean obviously people are interested in my parents - they're very interesting people, so it's understandable that people want to talk about them."
She is very close to her mother - they have appeared in campaigns together and she has frequently mentioned her as an influence on her style. She loves the glam 1970s look for evening - indeed, she turns up at the launch party later that evening looking like a 1970s disco queen in a sequin gown by Sass and Bide - something that has no doubt been influenced by Jerry, a former Studio 54 regular.
Her mother's Texan background is another influence, combined with London cool. "I dress a lot more cowgirl than a lot of people in London," Jagger jokes.
"I love to wear cowboy boots, high-waisted jeans. I think my mum's style, and how we were bought up in Texas and how she would dress, has really influenced me. A lot of tie-dye ..."
Jagger counts Vivienne Westwood as a favourite designer and family friend, continuing the family tradition of working with the Dame - she recently featured as "the face" of Westwood's new jewellery collection. "I met her when I was very young, probably when I was about 3. So I've known her my whole life but this was the first time I'd worked with her. My mum worked with her a lot.
"She's such an incredible person. She gives so much to the world and she cares about so much more than just the world of fashion. She wants to expand and interconnect it [the world] with her industry. She's such an inspiring woman; she is quite powerful."
Beyond modelling, Jagger is interested in being behind the camera, recently doing a lot of "I guess you could call it distorted portraiture". She's unsure about taking her photography passion further though. "I'm not so into the whole pompous type of attitude, I'm not going to be like [extra posh voice] 'oh my pictures are so special, I must have a gallery and they must be sold for millions of pounds'." She prefers a more democratic approach, acknowledging the trend towards showing work online.
In front of the lens she has worked with many amazing photographers - Mario Testino, Karl Lagerfeld, Mario Sorrenti, Terry Richardson, Ellen von Unwerth, Miles Aldridge - but notes Alasdair McLellan as one favourite. "I love that he still uses film and Polaroid. It's a nice way to work as it's not so quick and digitised, which can sometimes take the heart out of it a bit. You get the surprise; you don't see his pictures until [they're] in the magazine." She also loves the pictures of Irving Penn and Helmut Newton, who both photographed her mother several times.
Hall's own modelling experience has helped shape Jagger's career. "She always tells me to be myself, to not let it [the job/industry] affect me so much and have fun with it. She always says things like, 'if it feels weird, if it's not comfortable, don't do it'."
As for advice from Dad? "He doesn't really give me many modelling tips!" she jokes. "But he is a very educated person, so I think his advice - not that he's told me, but he has shown me - is to always make the most of where you are, you know, always immerse yourself in culture and art, and history - be interested in things."
* Zoe Walker flew to Sydney as a guest of Sunglass Hut.