Credit: Twitter

Hilary Duff found a creative way to get into the holiday spirit this year.

On Thursday, the pregnant star uploaded an adorable picture to her official Twitter account, unveiling her bare baby bump. Adding to its cuteness: Hilary's older sister Haylie painted a gift-wrapped present on the Lizzie McGuire star's pregnant belly and added the phrase "Happy Holidays."

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"What would I do without you and your artistic ways?" Hilary, 24, tweeted.

Haylie, 26, is clearly excited to become a first-time aunt, tweeting: "I can't wait to meet my nephew. Hurry up and get here!"

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This will be the first child for Hilary and husband of 16 months Mike Comrie, 31. "People keep saying to me, 'Sleep right now. Get your sleep!'" Hilary recently told Us Weekly. "I keep saying, 'I just want the baby here! I want to play and I'm ready to see what he looks like.'"