Two In Love! Formal Tuxedo Baby/Toddler Bodysuit & Pants Set Makes a great gift! Newborn size is equivalent to 0-3 Months; 6 Month Size is equivalent to 3-6 Months; 12 Month Size is equivalent to 6-12 Months; 18 Month Size is equivalent to 12-18 Months. 100% cotton. 2-Piece Set. Pants and bodysuit included.