Never underestimate the importance of your image - 80 per cent of your impression of someone is decided within the first 10 seconds of meeting them.
Even if you are not entirely the mistress of your brief, if your image is professional, authoritative and trustworthy, you will be convincing in many situations.
You should also be aware of the conflicts between being taken seriously, being true to yourself and being approachable to your clients, your peers and your staff.
Guidelines from the image gurus
Whether dressing for work or an interview, make sure you wear a smart suit. Look fit and healthy, maintain an attractive hair style.
12 tips for the top
Take 15 to 20 minutes for make up each day.
Take 10 minutes to dress and accessorise.
Have your hair cut every six to eight weeks.
Wear clear or neutral nail varnish to work, not strong colours.
Manicure your nails every week.
Wear make up daily (research shows women who wear make up earn more and get promoted faster).
Avoid tight, short skirts.
Don't be a slave to fashion wear whatever length suits your body shape.
Never wear sleeveless dresses or blouses to work.
Avoid very high heels - 1.5 inches is best and the most comfortable.
Use shoe trees to keep shoes in shape.
Spend money on good quality bags, shoes and briefcases.
Sartorial guidelines
Ensure at all times that your image is appropriate for your partnership, firm, employer or organisation.
Tailored trousers are acceptable in most work places if they are well-cut and flattering.
The colour of the clothes you wear is also important in creating a good impression.
Dark colours are seen as authoritative but do not always succumb to the stereotype of wearing a dark suit with a white shirt.
When you need to project power, try a solid colour jacket in rich red, deep blue or royal purple.
To be user-friendly, wear mid-tone colours such as warmed greys or browns, such as stone, pewter or camel.
To encourage others to share their ideas with you, choose insignificant colours such as pewter, mid-grey, bronze, stone or taupe.
Pastel colours have no authority and should be reserved for leisure time.
Don'ts
Never wear white or open-toed shoes to work - tacky shoes are a real giveaway.
Don't put up with poor teeth. Invest in cosmetic dentistry to achieve a good smile.
Don't be a fashion victim - wear what suits your work style and body shape.