It's so easy to shorten the shoulder straps on your bikini top! Seriously, if I can do it, ANYONE can! We show you how to shorten the straps on your bikini top at home in just a few minutes. If you don't have access to a sewing machine or are not up for trying it yourself, you can easily take it to your local tailor. They can do it for you and it should not cost much! Many dry cleaners also provide alteration services.