Most enjoyable thing is with you that you don’t have a mind that gets older and you have fun with every age person in the house. Happy Birthday Sister-in-law for not having a brain at all!

No matter how dumb you are, we still love you because watching you doing stupid things is my favorite thing.

Happy Birthday to my sweetest and most decent sister-in-law. But I know deep down in your heart, you love to do crazy and naughty stuff, I know all this as you are married to my naughty brother.

Some people get sober every year they get older. But on the contrary, you are becoming crazier every year.

Patience is something you are trying to have but the truth is you can’t replace obsession with anything. We love you as you are. Celebrate your birthday party with full of madness and fun.

Sharing laughs and some weird stories with each other, you are the best girl I ever met in my life. Happy Birthday to the craziest person in the family!

You the funny, crazy and weird girl I ever met and I’m glad you are a part of my family. Many happy returns of the day!

Happy 25th Birthday to my gorgeous sister-in-law, May your age be still this year and you don’t get older than this.

I want to shout out loudly, happy Birthday to my only sister-in-law who stood as the real sister figure.

HBD to the woman, who gave a lot of love as well as headache all the time, always shows and never goes a day with telling us that you love us.

Happy Birthday to my gorgeous Sister-in-law, wish you become younger every year instead of getting older. Eventually, it will increase your spending on anti-ageing products.

They can’t go uncelebrated especially when it is the special day of your sister-in-law.

Why not drop a special greeting and make her smile on her birthday?

Sister in laws are like muffins in a bad day. They make you all warm and fluffy inside, chasing the bad vibes away.

Not only was I blessed with a great husband, but also with an awesome sister-in-law. Life gave me a wonderful package deal! Best birthday!

Such a wonderful person like you deserves abundance of happiness, a bouquet full of blessings, a bag full of good health and a chest-full of love. Wonderful bday, my sister-in-law!

Bring out that delicious chocolate cake. Open that sparkling bottle of Pinot Blanc. Let us celebrate your bright and new chapter ahead! Best bday, sister-in-law!