{{ form_widget(form.sex) }}

<div id="entry_sex">
    <div class="radio">
        <label class="">
            <input type="radio" id="entry_sex_1" name="entry[sex]" value="1">
            男性
        </label>
    </div>
    <div class="radio">
        <label class="">
            <input type="radio" id="entry_sex_2" name="entry[sex]" value="2">
            女性
        </label>
    </div>
</div>

<div id="entry_sex">
    <div class="radio">
        <label class="">
            <input type="radio" id="entry_sex_1" name="entry[sex]" value="1">
            <span class="txt">男性</span>
        </label>
    </div>
    <div class="radio">
        <label class="">
            <input type="radio" id="entry_sex_2" name="entry[sex]" value="2">
            <span class="txt">女性</span>
        </label>
    </div>
</div>

    $(function()
    {
        $('.radio label').each(function()
        {
            $(this).wrapInner('<span class="text"></span>');
        });

        $('.radio input').each(function()
        {
            var parent = $(this).parent();
            $(this).insertBefore(parent);
        });
    });