Website url is being displayed differently to most others.

Hi guys,

I’ve just launched a new website today and remarkably the home page is already being indexed by google.

However, in googles search results when it shows my site, it displays the url as simply mysitedotcom. I’ve noticed that the vast majority of sites though have www. beforehand. ‘Nike’ for example have this, yet the ‘Fashionista’ site is the same as mine and just shows fashionistadotcom.

Personally i think it looks better with the www beforehand so is there any way to add this by changing some settings? When i installed wordpress through cpanel and softaculous i was given the option to chose the protocol so is it just a matter of amending this?

Thanks to anyone who can help.