Today is my sister's birthday. Happy birthday, Sister R!
As you can see, she has always been fond of me. Weren't we a snuggly pair? She's the curly-top. I'm the immense pouty-faced baby.
When each of us got married, there was no question who would be the maid/matron of honor. We're godmothers to each other's kids. We live far apart, so we send each other books all the time. And when we do meet up, we enjoy a serious get-together where we act serious and do serious things.
I just turned in a book in which sibling relationships are important for both hero and heroine. Some are close; some are distant; some are tense and some are relaxed. People don't get to pick their families.
Still, I'd have happily picked mine. I'm sandwiched between an older sister and a younger brother who have both built wonderful families and careers. Nobody's perfect*, but we're all pretty perfect for each other.
*Though Little Miss R would like to nominate herself for your consideration.