Personalized Pi Day Math Symbol Celebration Party Women's Plus Size V-Neck. Celebrate Pi Day with a Women's Plus Size V-Neck - White featuring distressed look math symbol logo for students, engineers or a math teacher. 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.