Happy Birthday, Halston Sage!

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Hey M Girls!

How To Rock's Halston Sage (and James Maslow's GF!) is celebrating her birthday today -- she's turning 19!

Lots of fans have been tweeting her sweet messages, including James! He wrote:

They seem so cute together, check out this recent shot he tweeted:

Aww! We hope Halston has the best birthday ever!

Let's dish: -What do you think of Halston and James? Leave your "Happy Birthday" messages for Halston below!

Photo courtesy of Nickelodeon

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