On cloud nine!
Simultaneously celebrating a pal’s birthday and her debut on ABC’s hit dancing competition show, the star “was in great spirits and could not have been more thrilled about kicking this competition off on the right foot,” a source tells PEOPLE exclusively.
Arriving around 9:30 p.m., the star and her mom settled into their seats and were “beaming from ear to ear,” says the source.
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“Amber and her mom shared a special moment and her mom expressed how proud she was of her daughter,” says the source. “She even sported a denim jean jacket with Amber’s face painted on the back of it.”
The group shared seared salmon sashimi, lobster rolls, edamame and baked crab hand rolls while sipping on cocktails throughout the night.
Before heading out, a special dessert platter was presented to Rose bearing the words “Best of Luck w/ DWTS.”