And it's not just curbside style getting a bargain boost; Michelle Williams even chose to rock H&M on the red carpet at the Baftas this year.
So make like one of these stars and hop to the high street for your next shopathon...
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- May 2012<p> Flower power: Rihanna showed off her pins in a pair of floral-print shorts from<a href="http://www.topshop.com/webapp/wcs/stores/servlet/TopCategoriesDisplay?storeId=12556&catalogId=33057" target="_blank"> Topshop</a> while out in New York.</p>

- April 2012<p> Ginnifer Goodwin chose a statement ruffled <a href="http://www.hm.com/gb/" target="_blank">H&M</a> dress over a designer label for a dinner date with the Obamas at the 2012 White House Correspondents Association Dinner.</p>

- April 2012<p> Nicky Hilton was super-cute in a gorgeous floral minidress from <a href="http://www.topshop.com/webapp/wcs/stores/servlet/TopCategoriesDisplay?storeId=12556&catalogId=33057" target="_blank">Topshop</a> at <em>The Lucky One </em>screening in NY.</p>

- April 2012<p> <em>X Factor</em> star Tulisa Contostavlos was chic in a silver-embroidered <a href="http://www.warehouse.co.uk/" target="_blank">Warehouse</a> jacket, studios of Radio 1 in London.</p>

- March 2012<p> Singer Una Healy stepped out near her home in Bedfordshire in a summery butterfly-print <a href="http://www.sugarhillboutique.com/" target="_blank">Sugarhill Boutique</a> dress.</p>

- March 2012<p> For the Leicester leg of the Queen's Diamond Jubilee UK Tour, Kate Middleton chose a teal <a href="http://www.lkbennett.com/" target="_blank">LK Bennett </a>jacket, skirt and belt, which she finished with black courts and a beret-style hat.</p>

- March 2012<p> Nicola Roberts dared to bare in a see-through knitted <a href="http://www.topshop.com/webapp/wcs/stores/servlet/TopCategoriesDisplay?storeId=12556&catalogId=33057" target="_blank">Topshop</a> jumper, which she teamed with psychedelic trousers at Heathrow Airport in London.</p>

- March 2012<p> Fearne Cotton was comfy but cool in a<a href="http://inlovewithfashion.com/" target="_blank"> LOVE</a> jumper dress as she arrived at the studios of Radio 1 in London.</p>

- March 2012<p> Amy Childs was a ray of sunshine in a lace-accented <a href="http://www.karenmillen.com/" target="_blank">Karen Millen</a> dress at the Tesco Magazine Mum Of The Year 2012 bash in London.</p>

- February 2012<p> Which designer do you choose for the biggest night on the British red carpet? If you're Michelle Williams, none! The actress instead opted for a stunning <a href="http://www.hm.com/gb/" target="_blank">H&M</a> dress at the Baftas, which could easily have passed for Chanel.</p>

- February 2012<p> Drew Barrymore chose a bold floral-print<a href="http://www.jcrew.com/index.jsp" target="_blank"> J Crew </a>dress for<em> The Tonight Show with Jay Leno</em> in NY.</p>

- February 2012<p> An elegant Lana Del Rey stepped out in patent Mary Jane <a href="http://www.office.co.uk/" target="_blank">Office</a> shoes for an appearance on the <em>Late Show with David Letterman </em>in New York.</p>

- February 2012<p> Risk-taker Rooney Mara eschewed designer labels in favour of an <a href="http://www.asos.com/Women/" target="_blank">Asos</a> jumpsuit for the 84th Annual Academy Awards Nominees Luncheon in Los Angeles. She teamed her onesie with a white strong-shouldered blazer for a striking effect.</p>

- January 2012<p> Taylor Swift paired a sweet aniimal-print <a href="http://www.asos.com/Women/" target="_blank">Asos </a>dress with opaque tights and a leather jacket while strolling in Hyde Park, London.</p>

- January 2012<p> Singer Pixie Lott was quirky in a sheer <a href="http://www.asos.com/Women/" target="_blank">Asos </a>skirt as she arrived at the BBC Maida Vale studios in London.</p>

- January 2012<p> Alesha Dixon was smart and sexy in a Warehouse blazer and hot-pink miniskirt for the Blackpool auditions of Britain's Got Talent.</p>

- January 2012<p> Elizabeth Olsen worked a Versace-inspired <a href="http://www.topshop.com/webapp/wcs/stores/servlet/TopCategoriesDisplay?storeId=12556&catalogId=33057" target="_blank">Topshop</a> jumper at the 2012 Sundance Film Festival in Utah.</p>

- January 2012<p> Emma Roberts slipped into a skintight floral <a href="http://www.topshop.com/webapp/wcs/stores/servlet/TopCategoriesDisplay?storeId=12556&catalogId=33057" target="_blank">Topshop</a> dress for the <em>Celeste and Jesse Forever</em> film premiere at the 2012 Sundance Film Festival in Utah.</p>

- December 2011<p> The life of a celebrity is not all about red carpet glamour, and Jessica Alba did cool and cosy just as well in a stripy <a href="http://bananarepublic.gap.eu/?" target="_blank">Banana Republic </a>jumper while shopping in Los Angeles.</p>

- November 2011<p> Kate Moss showed us all how to wear a 'yeti' coat at the 2011 British Fashion Awards, and chose a <a href="http://www.topshop.com/webapp/wcs/stores/servlet/TopCategoriesDisplay?storeId=12556&catalogId=33057" target="_blank">Topshop</a> number for the sartorial lesson.</p>

- November 2011<p> Pippa Middleton teamed a <a href="http://www.reissonline.com/womens/" target="_blank">Reiss </a>coat with leggings and knee-high tan boots to great effect while on her way to work in London.</p>

- November 2011<p> Rosie Huntington-Whiteley was something special in a sculptural <a href="http://www.marksandspencer.com/b/42966030?intid=gnav_hp_img" target="_blank">M&S</a> dress at the Marks and Spencer store opening on the Champs-Elysees in Paris. Who needs Stella McCartney when you can look like this in high street…</p>

- October 2011<p> Holly Willoughby made a great advert for her own <a href="http://www.very.co.uk/" target="_blank">Very Collection</a> line by donning an LBD from the range at The Pride of Britain Awards.</p>

- October 2011<p> All that glitters does not always cost an arm and a leg in gold! Sandra Bullock wowed in a sequin <a href="http://www.allsaints.com/" target="_blank">All Saints</a> dress at the amfAR Inspiration Gala in Los Angeles.</p>

- October 2011<p> You'd be forgiven for thinking that Alexandra Burke was channelling Victoria Beckham at a Save The Children event on London's Southbank but, in fact, her stunning scarlet pencil dress was from <a href="http://www.riverisland.com/Online/" target="_blank">River Island</a>.</p>

- October 2011<p> Lea Michele donned a sexy lacy <a href="http://www.asos.com/Women/" target="_blank">Asos</a> minidress for the American Horror Story TV series screening in Los Angeles. Love the shoe booties, too.</p>

- October 2011<p> We have to admit to being a little bit in love with Kourtney Kardashian's sexy 70s chic when she stepped out in New York for sister Kim's birthday. She paired her stunning tan over-knee boots with a cute horse-print dress from <a href="http://www.hm.com/gb/" target="_blank">H&M</a> and a furry gilet.</p>

- September 2011<p> Britney Spears definitely wanted to be seen in green as she attended the Femme Fatale UK tour launch party in a colour block <a href="http://www.topshop.com/webapp/wcs/stores/servlet/TopCategoriesDisplay?storeId=12556&catalogId=33057" target="_blank">Topshop</a> dress.</p>

- August 2011<p> Hailee Steinfeld arrived at a private party in LA's Pacific Palisades in a cute 'n' summery<a href="http://www.hm.com/gb/" target="_blank"> H&M </a>dress teamed with cork wedges.</p>

- October 2010<p> The Saturdays star Mollie King was a blue belle in a ruffled <a href="http://inlovewithfashion.com/" target="_blank">LOVE</a> dress at the Firetrap watches and Kate Moross launch party in London.</p>


