'DWTS' star, 54, and daughter, 20, post bikini photos for National Selfie Day

The reality television star took to social media to share a photo of herself dressed down in nothing but a two piece swimtsuit, and plenty were envious of the tiny figure she showed off. 

Lisa Rinna may be 54 years old, but that doesn't mean she can't rock a bikini. Recently, the Real Housewives of Beverly Hills star decided to celebrate National Selfie Day with a shot of herself rather scantilly clad. 

Rinna took to Instagram to share the shot, taken in a mirror with her cell phone, of herself in a black and nude string bikini with nothing else but a coy look on her face standing in what appears to be her bedroom. 

She captioned it simply: "I mean It is #nationalselfieday." 

The bikini's look is created with black strings over nude mesh, making it look as though much more skin is exposed than it really is. The top is a small triangle cut, and the bottom is a low-rise brief. 

Within 19 hours, the post had over 28,000 likes, with plenty of fans commenting on the incredibly body the former Dancing With The Stars competitor was sporting. 

Just 9 hours after Rinna shared the image, her 20-year-old daughter also shared her own bikini self to the social media site. 

"tonight was dope thank you @francescaaiello @frankiesbikinis for including me in this insane show love you mama," she captioned the image. 

She was wearing a gray bikini with a thick white lining, and a number of clips on both the bikini top and the bottom. The top also featured a strap that tied around her waist below the triangle cups. 

The image certainly showed that the young model, despite being more than 3 decades younger than her mother, certainly inherited an enviable bikini body from her. 

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