TWIST is sending many birthday wishes to Kristen Stewart today -- she's now 19! We can't wait to hear how she's celebrating her last year as a teen in Vancouver, CA. Her New Moon costars will def make her b-day rock!

Leave your b-day wishes for Kristen here, too! And tell TWIST, what's the perf birthday gift for Kristen?

And remember to pick up Sweet 16 Secrets, on stands for a limited time! You don't want to miss the exclusive stories about your fave stars' best b-days ever!

XO!
Kourt

Photo credit: Startraks