Here's how Olivia Culpo buys the best holiday gifts for her sisters year after year

Jennifer Kline, AOL.com

The holidays will be here before you know it -- which means you're running out of time to choose the perfect gift for your sister. Luckily, Olivia Culpo's got you covered.

During a chat with AOL, Olivia revealed her go-to strategy for finding amazing presents for her sisters, Aurora and Sophie. Each year, the family exchanges gifts Secret Santa-style, which adds extra motivation to choose something the recipient will adore.

"The key to getting a good gift is genuinely feeling like it's something you would love if they got it for you," Olivia told us. "So ask yourself, 'Would I be thrilled with this gift?' And if the answer is yes, ninety percent chance they will love it."

The method worked flawlessly in recent years, she said: "For my younger sister I got her a watch, and for my older sister, I got her a massage and a yoga retreat!"

Sometimes the best gift is one that's gone within the night -- like spending the evening enjoying a cocktail with your sister. Olivia's go-to holiday drink, featuring Stella Artois Cidre, is ideal for nights by the fire or massive Christmas parties. We've included the recipe below -- enjoy!

Olivia Culpo's Stella Artois Cidre Sparkler

To make homemade syrup:

1.5 cup cranberries

1.5 cup sugar

2 cups water

4 rosemary sprigs

Bring cranberries and water to a boil and cook until cranberries are soft (about 8 minutes) and can be crushed with a spoon. Remove from heat, add sugar and rosemary, stir to dissolve sugar. Let steep for at least one hour before straining and pressing the juice from the berries, then chill the mixture.

To build the cocktail:

.75 oz homemade rosemary cranberry syrup

.25 oz lime juice

1 bottle Stella Artois Cidre

Build cocktail in a tin shaker, add ice and strain into Stella Artois Cidre wine glass. Garnish with rosemary sprig. (Serves 4.)