They say imitation is the sincerest form of flattery -- which is why Lisa Rinna, 47, tweeted a photo of herself in a skimpy bikini just days after Demi Moore showed off her own taut tummy.

"Doin the Demi!" Rinna tweeted Thursday. "Power to the 47yr olds!!!!! She is my idol!"

Moore, also 47, had previously posted -- and later deleted -- the shots Wednesday afternoon. "Maybe this is more like summer!" she tweeted.

Tell Us: Does Lisa Rinna look better in a bikini than Demi Moore?

Poll

Which 47-Year-Old Actress Looks Better in a Bikini?

Lisa Rinna
Demi Moore
23620 Total Votes
Which 47-Year-Old Actress Looks Better in a Bikini?