Warning! Sister Your Best Days Have Officially Passed You By – Funny Sister Birthday Card

Delivered with love, obviously — but someone had to say it and it might as well be you.

• White card with bold yellow warning triangle graphic and red and black typography
• Slogan: "Warning! Sister I Hate to Tell You, But It Is My Duty. Your Best Days Have Officially Passed You By!"
• Comes with a kraft brown envelope
• Square card format — an official notice she won't forget
• Perfect for milestone birthdays, sisters, and anyone who appreciates brutal honesty wrapped in a card

Consider yourself warned. Happy birthday.