A blazer can take any outfit up a notch. My simple khaki's and T-shirt are transformed into a polished ensemble just by adding a blazer and coordinating Jewelry.
Blazer; Merona by Target (Savers $5) similar here
T-shirt; Ann Taylor Loft (Savers $2) similar here
Shoes; Aldo ($32 at Aldo two years ago) similar here
Pants; The Gap ($49 available now)
Necklaces; Black Pendant-Forever 21($8 two years ago) and the double necklace (Icing $5 six years ago) but similar here