I have a model from Phillip Stark the round one and the glass is broke. how I can get a new one for replacement, considering that I live in Brasil

Getting a glass shouldn't be a problem, but as it sounds as though you intend to fix it yourself, then please be aware of the following.

It is essential to get the correct size glass - even 0.5mm difference in the diameter means either it won't fit or it's too small and falls out again. As you say that the glass is broken, I would be surprised if you could remove it and still determine the correct diameter.
You need to think not only about how to remove the broken glass, but also about how you are going to fix the replacement one. Many watches have a very fine plastic ring around the glass that holds it in place and this may have also been damaged.
Also, with many watches it's necessary to remove the back, crown and movement to effectively replace the glass.
If your watch has any sort of water-resistance rating then it would need to be retested afterwards.

Bearing all this in mind, I strongly advise you to take your watch to a reputable watch repairer and let them sort it out.
If the glass is anything other than round, then the cost tends to go up. Get an estimate from them first, and decide if what they will charge you is reasonable - if it isn't then spend the money on a new watch.

Hope this is helpful.

Go to the shop or in the store where the watch bought, or in any center where you can find a watch similar to your girlfriend, im sure there's a service they offer for any watch they sell.

There's a possibility that they can fix again the broken glass or replace a new glass for it, they maybe have the same description and model to be replaced for that..

Visit the nearest watch center.

I assume you mean a Sekonda watch.
Watches from large scale manufacturers like Sekonda come with a wide range of glass sizes. 30mm diameter is a common one, but you would need to remove the glass in one piece to measure it. Watch glasses are commonly in 0.5mm steps (e.g. 30.0mm, 30.5mm,31.00 mm etc.) and may have rounded or bevelled edges so it is often very difficult to determine the exact size without removing the glass.
Additionally, there is the thickness of the glass to consider.
Finally, the 'glass' may be plastic, mineral glass or sapphire crystal.
All in all, you will have to know how to remove the back of the watch, how to remove the crown and stem in order to remove the movement, how to remove the glass in one piece, how to fit a replacement glass, how to refit the movement, how to refit the crown and stem and how to refit the back.
Alternatively, take it to a watch repair centre - you'll still have a working watch after they've finished with it.....

I cant inform about the exact size of the watch glass by the model or number of the case. For that you need to use micrometer to measure the thickness and diameter of glass. Most sommon thickness is 1mm. If the glass is broke, measure the thickness of any broken leftover and then the diameter by puting the calliper arms into watches groove for glass.

you just go to a clock store and look for the same thing and just buy it.

Hi,
if you require new glass please send me case number at rear of the watch to my email address and i will be able to supply and fit the glass,Iam a watchmaker for past 25 years.

Regards
Larry
email;larry.1@live.co.uk

There are sources that I use to find a replacement crystal for your watch. But even if you had a new crystal your have to know how to remove the old one and how to properly install the new one. I have the expertise and tools to do this, but it would be hard for you to do. My suggestion is to get an expert to do this, otherwise you will wind up with a watch that is not properly sealed to keep moisture out and this is the biggest killer of a watch.

Hi

I live in Australia and have dealted with watches for the past 2 years as a watchmaker's assistant.

Are you able to give me a model number as the stock number you have given above I am unable to see what kind of watch it is.

Generally YES glasses are able to be replaced. Mineral crystal glasses are the usual ones, but it depends on the type of case the watch has. If the case is unsual it may have to be ordered directly from Kenneth cole. If it's standard and round (and not domed in the middle) you can get a generic glass put in.

Is the glass smashed? If so it's adviseable to take it to a watchmaker, as small shards of glass may of gotten into the movement which will effect it's effectiveness later on in life.

Hope this helps?
Kind Regards
Shenlun

Yes we technician know how replace the glass desame of the original.All service center have the equipment to make glass design,or they allready have the sizes of that of your watch.For there is no problem about glass.