She's got great style. She throws a good party. She's often on the go and she definitely knows what's on the cool radar. She's your sister-in-law. So when you're searching around for gift ideas, be sure to step up your gifting game. If you two are close, feel free to choose a specific gift that feels like her. If you're more distant, scope out ideas that are a fun twist on something ordinary. Keep her guessing, and she'll be happy with these ideas.