Still going strong! Miley Cyrus joined her girlfriend, Kaitlynn Carter, on Wednesday, September 4, at Sunset Tower in Los Angeles to kick off the reality star’s 31st birthday festivities. Of course, the two couldn’t stop packing on the PDA.

“They were all over one another and didn’t care who saw,” an eyewitness at the hotel told In Touch exclusively. “There were lots of bottles of wine on the table, and Kaitlynn was drinking Moscow Mules and red wine.”

Even though some people think the 26-year-old moved on rather quickly, it seems like her new romance is the real deal. “Miley and Kaitlynn’s relationship isn’t just for show,” the source added. “They’re genuinely in love. Everyone was having a blast tonight, and Miley is so happy. You’d never know she was going through a divorce. She was acting like she didn’t have a care in the world.”

Miley Cyrus Celebrates Her GF Kaitlynn Carter's Birthday
Instagram

Kaitlynn also posted several pictures with her new lady on Instagram. In one video clip, The Hills starlet blew out her candle and made a wish while a big ice cream sundae was placed in front of her. Naturally, the “Malibu” crooner took pictures of her love with her sweet treat.

Additionally, it seems like Miley’s older sister, Brandi Cyrus, approves of her new relationship. The 32-year-old podcast host wished Kaitlynn a happy birthday via her Instagram Stories. “Happy birthday, @Kaitlynn!” she captioned a photo of herself with Kaitlynn and Miley on a boat.

Miley Cyrus Celebrates Her GF Kaitlynn Carter's Birthday
Instagram

The pop star and the blogger both broke up with their husbands this past summer — Liam Hemsworth and Brody Jenner, respectively — and now are happily dating. The duo was first spotted making out and canoodling during their Italian vacation in August.

In the end, it seems like Miley’s family just wants what is best for her. “Tish met Kaitlynn a month or so ago in the U.K., and they’ve also all met up in L.A. before Miley and Liam announced the split,” another insider told In Touch. “Tish has given her seal of approval and really likes Kaitlynn and thinks she’s fun. Tish’s main priority is Miley’s happiness.”

It seems like these two are in it for the long haul!

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