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Talk about partying in the U.S.A.!

Miley Cyrus spent the Fourth of July weekend celebrating with her beloved new beagle, Barbie.

"Happy to introduce the newest member of my family Barbie," Cyrus captioned the first Instagram shot of her new canine cutie.

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The 23-year-old singer included the hashtags #stopanimaltesting and #donttestonbeagles — to address the fact that beagles are the dog breed most commonly used in laboratory testing —and tagged the rescue organization Beagle Freedom.

Cyrus and her new pooch struck a fresh-faced pose together in a selfie.

In another pic, the former "Hannah Montana" star showed off her bedazzled holiday look while Barbie sported a fetching — get it? — patriotic pink top.

The singer also shared a sweet pic of Barbie enjoying play time with her pit bull, Tani.

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"Sisterzzzz!!!!" Cyrus captioned the photo. "Barbie ❤️s Tani!!!!"

Of course, Cyrus' holiday weekend didn't completely go to the dogs.

Actor Liam Hemsworth (L) and actress/singer Miley Cyrus arrive at the 2012 Vanity Fair Oscar Party hosted by Graydon Carter at Sunset Tower on February 26, 2012 in West Hollywood, California. Getty Images file

Us Weekly reported that the singer and her on-again/off-again fiancé, Liam Hemsworth, enjoyed a “romantic evening” in Malibu on Sunday — with Cyrus reportedly wearing the engagement ring the "Hunger Games" star gave her back in 2012.