Lindsey Vonn is Tiger Woods' biggest cheerleader as well as his girlfriend.
 
After he won his 79th PGA Tour title at the WGC-Bridgestone Invitational on Sunday, the Olympic skier took to Twitter to gush about her main man.
 
"So proud!!!!" she wrote of the living golf legend's victory, along with the number 79 and the hashtag "#GOAT" - an acronym for "Greatest Of All Time."
 
Tiger, who dominated the tournament, is never one to gloat on Twitter, writing, "Sharing this win with my son Charlie will be something I'll never forget."
 
Vonn does not hold back, however. Earlier this year, she trumpeted Woods reclaiming the number one ranking in the world, which he still retains.
 
For good reason. He's had an amazing season, winning five times. Not even this rogue squirrel could disrupt his mojo in Akron, Ohio, yesterday ...
 
Vonn, 28, was reluctant at first to even acknowledge their relationship, but has been increasingly open about her personal life since the two went public.
 
"Tiger's fame is obviously in the extreme, the amount of scrutiny that he's constantly under," she told Vogue in a July interview. "But that's the thing."
 
"It all comes back to being happy. It doesn't really matter what anyone else thinks; do what you love to do and be happy and that's it. It's amazing."
 
"Life changes very quickly, in a very positive way, if you let it."
 
Do you like Tiger Woods and Lindsey Vonn together? Love it or leave it, their new romance certainly seems to have made both of them very happy.
 
He's also getting along better with ex-wife Elin Nordegren, the mother of his two kids. Speaking of son Charlie, here's Tiger with him after his win Sunday: