So, you’ve decided to buy a ring for the special lady in your life. Great move! Whether it’s a promise ring, an engagement ring, or just a surprise to show her how much she means to you, the trick is getting it to fit perfectly. And unless you want to spoil the surprise by outright asking her, you’ll need some sneaky tactics to get that measurement right. Here’s a guide to finding her ring size without her catching on.

If she already wears a ring on her ring finger (or even on her middle finger, as sizes can be closely estimated), wait for a day when it’s off her finger and borrow it. Just remember, you have to be quick about it. Slide it on a piece of paper and trace the inside or take it to a jeweler to be sized. Just make sure to return it before she suspects it’s gone missing!

Enlist the help of her close friend or family member, someone who can be your accomplice in this secret mission. They might know her ring size, or they could be the one to casually bring up a conversation about ring sizes. Plus, it’s always helpful to have someone else on your side to cover up any slip-ups!

For those who don’t mind a bit of crafting, press one of her rings into a soap bar to create an impression. This method can give you a pretty accurate measurement without the need for her actual ring.

Does she sleep like a log? If you’re sure she won’t wake up, you can try measuring her ring finger with a piece of string. Carefully wrap the string around her finger, mark where it meets, and measure the length. Just be as quiet as a mouse!

Create a fun activity where she gets to try on rings—maybe a booth at a theme park or a fun day out at the mall that ‘just happens’ to pass by a ring store. The key is to make it feel spontaneous and ensure the shop assistant is in on the plan.

Find an excuse to compare finger sizes with hers. Make it a funny moment, like pretending to see whose hands are bigger or doing a ‘pinky promise’ with a twist. Once you have a sense of how your sizes compare, you can use a sizing chart to estimate hers based on your own.

If she loves jewelry, gift her a costume ring and make sure it’s sized. It can be part of a larger gift so it doesn’t arouse suspicion. If the ring fits, you’re golden; if not, you’ve got a starting point to figure out whether you need to go bigger or smaller.

Getting her ring size without her knowing can be a fun and creative challenge. Just remember, the goal is to make the ring buying process as special and surprising as the moment you give it to her. Good luck, and may your sneaky skills be ever in your favor!