The Shake It Up star looked positively stunning as she walked the red carpet at the Latina Magazine Hollywood Hot List party in LA last night (3 October).
Bella hit the style mark in a sunny yellow frock by Fausto Puglisi, paired with a pretty floral clutch by Diane von Fürstenberg.
She added instant zing with bright blue pointed shoes by Sophia Webster, which featured hot pink stiletto heels.
But with all eyes on her gorgeous outfit, we almost missed her adorable pastel nail art!
The 15-year-old star flaunted her new candy mani on Instagram earlier that day, adding the caption: "My birthday nails."
She sported a different design on each finger, including playful polka dots and glitzy gold studs. Our favourite? The teeny tiny clouds on her pinky. How cute?
Bella hit the bash with older sister Kalli, tweeting: "Latina night:) where my Thorne girls at!?"
Kalli sported a monochrome striped dress and an oversized black jacket, teamed with glitter heels for a touch of sparkle.
They're a stylish twosome!
What do you think of Bella's outfit? Let us know by commenting below as the best comment across the site each week wins £50!