It is very simple.
You don't need to go over the top with that.
The secret lies in the choices you make.
Before you go out, check what you want to wear.
Open your wardrobe and definitely go for what looks slightly sexier than what you would usually wear.
You know the difference between gross and sexy, right?
Ask a friend for help and advice if you are unsure.
The trick is to go slightly beyond your comfort zone and get used to it.
Same if you go shopping, choose for what looks sexy rather than practical or comfortable.
Check as well with fashion magazines.
Follow the trends.
Being sexy simply means daring to show yourself in your best light.
It means putting yourself in value.