"Wanted you guys to see it first," the 27-year-old starlet wrote on her personal blog. "Feeling good and love you."
Lohan shared a photo of herself posing with the tatt, alongside its inspiration -- a simple triangle representing truth, love, power, oneness, authority, courage and intelligence.
Lohan previously shared a photo of herself getting the ink with brother Michael Lohan.
Swim Week Miami Beach 2014 [PHOTOS]