It’s hard to imagine John Lennon without his signature circular specs. This season it will be hard to imagine you without them either. Retro-inspired eyewear reminiscent of the 1970s is making a comeback. Perennial trendsetter Tom Ford nails the look with his Titanium Round eyeglasses. The black matte rim gives a modern twist to the vintage design while the sleek titanium metal frame is both lightweight and durable. $530; tomford.com