November 30, 2017 06:00 PM

Mama’s got a brand new grill.

On Thursday, Khloé Kardashian posted a trio of glam photos showing off her pregnancy style. In the pictures — none of which featured her stomach — the Keeping Up with the Kardashians star wore a bright blue sports bra, which she accessorized with a cross necklace and a gleaming grill.

“Mean mug,” Kardashian wrote alongside one of the photos as she placed one of her long pink nails on her lips, emphasizing her new accessory.

But while the Good American designer may have struck a “mean mug” for one photo, in the second picture of the set, she struck a more serious tone.

“💕 I choose to start each day with a grateful heart and a happy state of mind 💕,” the expectant mother wrote.

RELATED VIDEO: Khloe Kardashian Is Pregnant! Revealed Days After Kylie Jenner’s Big Baby News

And then she got a little silly as she suggested she was having trouble deciding which frozen dessert to have as a treat.  “Hummmmmm… ice cream or fro yo? Yummm,” she wrote alongside the last photo.

While the 33-year-old has yet to officially announce her pregnancy, as multiple sources previously confirmed to PEOPLE, she and NBA player Tristan Thompson, 26, are expecting a boy together — due to arrive in early 2018.  This will be Kardashian’s first child. Thompson is also dad to 10-month-old son Prince Oliver.

Kardashian did make one thing with Thompson official recently: A KUWTK episode earlier this month marked the first time the Cleveland Cavaliers player appeared on the show. He and Khloé have been dating since September 2016.

“I just feel like Khloé has met her perfect match,” momager Kris Jenner gushed during the episode.

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