Irish Shamrock Tie Tuxedo T-Shirt. Our Irish Shamrock Tie Tuxedo T-Shirt is sure to have you lookin' your best this coming St. Patrick's day! This fun tuxedo t-shirt features a black tie with green shamrocks, a shamrock corsage and a kiss me I'm Irish button on the lapel! Crisp white collared shirt print paired with realistic looking packets, buttons and lapels makes this tuxedo t-shirt look just like the real deal. Be fun, be formal and get in to the Irish spirit. Erin Go Braugh!