I have bought - and washed - 6 open necked blouses [[www.johnlewis.com/john-lewis-girls'-non-iron-long-sleeve-open-neck-school-blouse-pack-of-2-blue/p17389]] when I should have bought closed necks ones to be worn with a tie [[www.johnlewis.com/john-lewis-non-iron-long-sleeve-blouse-pack-of-2-blue/p17585]] What can I do to make these suitable to wear with a tie? Sew on some velcro? Thanks.