Need end-of-summer style inspo? Head straight to Martha Stewart's Instagram. The lifestyle entrepreneur's grid is filled with lavish ensembles, ranging from mega yacht-worthy pieces to cozy styles for chilly summer nights. The 84-year-old recently posted about her birthday surprise, and we couldn't help but swoon over her waffle knit hoodie. With a soft, unique textured, zip-up design and a roomy hood, Stewarts look screamed 'coastal rich mom.' While we don't know where it's from, we went straight to Amazon and landed on this $43 version - and it's the only thing we're wearing until late fall.