We are firm believers of matching picture frames especially for family photos. There is something just so clean and precise about it, just perfect for our A.R. minds.
Target has a handy little set of frames, 10 black wood [color of choice in our house] for a steal at $19.99 one 8x10", four 5x7", three 4x6", and two 2-1/2x3-1/2" frames. And if you're anything like us, it will take you a hour to hang each one, measuring and fretting - a definite weekend project in the making.