It's clear from these shots the tots are happy around Lindsey, and their dad appears to be as well.
As we previously reported, Tiger and Vonn met in April 2012 and began dating in November, a year after her breakup with skier Thomas Vonn. (Their divorce was finalized in January.)
The romance is Woods' first during his second run of bachelorhood following his 2010 divorce to ex-wife Elin Nordegren.
In March, the athletes finally admitted they're an item after months of speculation.
Vonn, 28, wrote on her Facebook page: "I guess it wasn't a well-kept secret but yes, I am dating Tiger Woods. Our relationship evolved from a friendship into something more over these past few months and it has made me very happy. I don't plan on addressing this further as I would like to keep that part of my life between us, my family and close friends."
Around the same time, Tiger wrote on his website: "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."
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