Introducing VACAY GUIDE PART II: Under $50 Edition. Yep, that’s right, I’ve rounded up my weekender essentials I can’t live without, just in time for Memorial Day. Black Onepiece: so necessary and your perfect staple. It’s simple, it’s classic and you won’t be too under or over dressed. Sun Bum: you need it girl. In chapstick form, in sunscreen form, in any…