She didn't get the memo! Khloe Kardashian covers up in maroon top and jeans as her sisters model bra tops in Costa Rica 

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Kourtney and Kim Kardashian both wore bra tops when they went to dinner at Ostra in Costa Rica on Friday evening.

But sister Khloe did not seem to get the memo.

The 32-year-old Revenge Body star covered up a bit - well, covered up by Kardashian standards - with a maroon top and jeans, no doubt from her Good American line.

Solo: Khloe Kardashian wore a maroon top and jeans when she had dinner with her family in Costa Rica on Friday

Her maroon top was skin tight and off the shoulder.

Khloe's jeans, which had an uneven split hem, were snug as can be,

And the Cosmo cover girl still had on her tight braids from her recent trip to see beau Tristan Thompson of the LA Lakers.

 The beauty kept her head down and did not appear to be in the best of spirits/

A 10: Kourtney Kardashian looked very comely in her outfit

Sister Kourtney has been linked with both ex Scott Disick (they are reportedly back on) and Justin Bieber in recent weeks.

But while vacationing with her family, the 37-year-old beauty appeared to be man-free.

Still, the mother-of-three dressed to the nines as she headed out to a dinner.

The family: The cover girl was with sisters Khloe and Kim as well as mother Kris Jenner and her love Corey Gamble

Kourtney's bra top was black with a mauve ribbing.

It left little to the imagination as it showed off her chest and abs.

Wide-legged silky slacks in a pretty dusty rose added 1940s glam as did her open-toe heels. The star pulled her hair back and wore less makeup than usual. 

Sister Kim wore even less.  

More to love: The super star has been working out every day since she welcomed Reign

The walk of Costa Rican fame! The family was surely shooting an episode of KUWTK

Va-voom! Kim showed off her body as well but went with black and white

Nice look: The star's white crop bra top looked custom made. It not only showed off plenty of the reality maven's cleavage

The star's white crop bra top looked custom made.

It not only showed off plenty of the reality maven's cleavage, but it also flashed her stomach muscles, which are very impressive considering she welcomed son Saint into the world just over a year ago.

Kim added black slacks and heels to her eye-popping number. 

The super star has been working out one hour a day and is on the Atkin's Diet.

Nice place: The star was looked after by a guard as she left Ostra

Girl power: Behind Kim and Kourtney was momager Kris and beau Corey

Hello! Kardashian modeled nothing but a low cut black tank top during a Snapchat session with kids North West and Saint from her trip to Costa Rica

Like a Playboy bunny, but not: Kim chose a rabbit filter with fuzzy ears and a pink nose and whiskers

This comes after the wife of Kanye West modeled nothing but a low cut black tank top during a Snapchat session with kids North West and Saint.

Kim chose a rabbit filter with fuzzy ears and a pink nose and whiskers.

The star seemed to be enjoying her animal filter as she kept the camera on her famous mug for quite some time.

Also in on the fun was her two children with the Yeezy rapper: North, aged three and Saint, aged one. 

Look at me! The star seemed to be enjoying her animal filter as she kept the camera on her famous mug for quite some time

North looked cute in her filter, which was the same as her mom's.

The little Keeping Up With The Kardashians guest star is a natural with the camera, gazing softy into the lens.

She had on a pink and purple top. 

Also there was Saint, who wore a white onesie.

Her little star: North looked cute in her filter, which was the same as her mom's. The little Keeping Up With The Kardashians guest star is a natural with the camera, gazing into the lens

The next Yeezy: Also there was Saint, who wore a white onesie

He is already walking: Saint has been taking a few steps here and there at home

The family looked to be staying in a home.

The colors were a neutrals with a white sofa and dark beige carpeting as well as a wood coffee table.

Also there was sister Khloe, who wore a white tank top and also had a filter. She was playing with Kourtney's son Reign.

Reign wore a grey top and gold chain like father Scott Disick. 

Kim was seen flying out of LA on Friday on her way to the vacation.

Another low-cut top: Also there was sister Khloe, who wore a white tank top and also had a filter. She was playing with Kourtney's son Reign

Just like papa: Reign wore a grey top and gold chain like father Scott Disick