L*Space Allegra Lavender and White Crocheted Stripe Cover Up Dress Size XL NWT. On trend and oh so sexy, the Allegra Cover Up Dress has landed. Net crochet sleeveless cover up features a high neck and can be worn over all your favorite swimwear, or wear over a nude slip for a sexy evening look. 100% super soft cotton. Adjustable tie neckline and back, ties at the small of the back for sexy allure. Size chart in photos.