Having a sister is like having a built-in best friend.
At least, that's what my mom told me. It took my sister and I until our late teens to figure it out, but now I can't imagine not calling my sister my best friend. That's also the case for sisters Alexis Monkhouse and Ashley Okegbenro Monkhouse, who decided they loved each other too much to live apart from one another — so they bought tiny homes next to each other!