The pro skier took to Twitter yesterday after her beau regained the title of world's top golfer for the first time in two and a half years.
"Number 1 !!!!!!!!!!!!!" the 28-year-old blond beauty posted.
Woods' big news comes a week after the couple announced their relationship on Facebook with an album of PDA pics.
"Something nice that's happened off the course was meeting Lindsey Vonn," Woods, 37, posted. "Lindsey and I have been friends for some time, but over the last few months we have become very close and are now dating. We thank you for your support and for respecting our privacy. We want to continue our relationship, privately, as an ordinary couple and continue to compete as athletes."
Congrats, you two!