she's a cool mom. And on Sunday, the supermodel confirmed her status after debuting matching tattoos with her 18-year-old daughter, Grier Hammond Henchy, that they got in honor of Mother's Day.

Some adventurous moms and their adult children traded in Mother’s Day ... “So you’ll have the daughter come of age, and they’ll come in and do a matching tattoo or a similar theme.” ...

You could [buy] flowers … but this is something that’s going to last,” said Adam Korothy at Live By The Sword in Williamsburg, Brooklyn.