Today is the day!
To get her fans extra excited, the 19-year-old teased some of the goodies to Snapchat on Thursday. Take a look (below):
[Image via Instagram.]
They swapped styles!
The supermodel opted for a skin tight, red one-shoulder dress by Preen, which she paired with some fierce Saint Laurent studded heels.
We're not crazy about Heidi's bouncy curls, but we won't hold it against her.
Which judge's look do U prefer? Heidi or Mel B???
[Image via Daniel Tanner/WENN.]