Reveal readers will know Bella's always at the top of our most-stylish lists and pretty much everything she wears we want – and it was no exception on Sunday!
The 17-year-old chose an orange strapless frock by Balmain, a favourite label among the Kardashian-Jenner family. Her beau Gregg, 23, looked dapper in Emporio Armani.
Of course, every star needs more than one outfit so later in the evening, Bella slipped into a new dress, this time an LBD with neon yellow trim. Beautiful!
Bella was one of the night's winners, taking home the prize for 'Choice Movie Villain' for her role in The Duff. (FYI: DUFF stands for Designated Ugly Fat Friend.)
Alongside an Instagram video of herself posing with the iconic Teen Choice surfboard trophy, Bella said: "OH MY FEELS!!! I won!!! Thank you so much for all your votes. You made it happen for me. So grateful and appreciative."