Personalized Big Sister Unicorn Women's Plus Size V-Neck. Big Sister Unicorn - A cute big sister unicorn prances with a heart on her cheek in a rainbow filled sky. Cute gift for any big sis! So comfortable you'll want one in every color! These versatile v-neck t-shirts are great to wear to the office or at a weekend BBQ with friends. Available in a wide range of colors to compliment any wardrobe, these shirts are softly shaped to complement a plus sized woman's curves.