Here she begins a three-month fitness course with personal trainer Efua Baker, body sculptor to Hollywood stars including Sienna Miller and Christian Bale.

Several celebrities have given testimony, including actors Hugh Grant and Sienna Miller, singer Charlotte Church, ex-Formula 1 chief Max Mosley and Harry Potter author JK Rowling.

She is known for her list of celebrity clientele, including Sienna Miller, Kate Bosworth, Elizabeth Olsen, and Rosie Huntington-Whiteley.

In the same year he was profiled in an E4 TV documentary James Brown's Supermodel Salon and became a regular style contributor to Glamour magazine, whilst continuing to work regularly with Clients including Kate Moss, Sienna Miller, Lily Allen, Anne Hathaway, Liv Tyler, Diane Kruger and Emma Watson.

Her designs are popular with both film stars and celebrities, including:Keira Knightley, Scarlett Johansson, Sienna Miller, Madonna, Claudia Schiffer, Margaret Thatcher and Reese Witherspoon.

ModelCo claims many celebrity customers, including Kylie Minogue, Lindsay Lohan and Sienna Miller.

Her clothes have been seen on many celebrities including Lady Gaga, Björk, Sienna Miller, Natalie Portman, M.I.A., Alexa Chung, Beth Ditto, Michael Haneke, Liv Tyler, Rihanna, Claire Danes, Zooey Deschanel and Jennifer Lopez.

Efua Baker, personal trainer for stars including Sienna Miller and Christian Bale, takes the Guardian's Kelly Bowerbank on a no-holds-barred, three-month training programme to get her looking buff enough to walk the red carpet.

They provide runway show music for various fashion designers including: Bill Blass, Costello Tagliapietra, Cynthia Rowley, House of Holland, Sienna Miller, Sophia Kokosalaki, Tony Cohen and Tory Burch.

A number of celebrities - including JK Rowling and Sienna Miller - specifically complained about long-lens cameras when they gave evidence to the inquiry before Christmas.