For hundreds of years women are dreaming about beautiful bronze suntan and, as a result, swimsuit had huge transformations during the history. The evolution of the swimsuit leaded to the evolution of the tan lines: while swimsuits were becoming more and more revealing, tan lines were diminishing in size. 
Being already in 21st century, why at last not to get a perfect suntan without any tan lines? You don't need to buy tons of different bikinis anymore or go to the nude beach: get your perfect suntan easily with Solisun, Lithuanian solarium network.