We know you've been on pins and needs, tossing and turning nightly worrying about who Jenna Bush was going to select to design her wedding dress. Breathe again at last: She has made her decision. Oscar de la Renta will be dressing America's favorite children's book author/boozy bride-to-be. Need to be reminded of what his sketch looked like? Click on the pic to see. [WWD, sub req'd]