She frolicked on the beach in a skimpy string ʙικιɴι the day before.

And Kim Kardashian continued to give her fans a charge as she was spotted rocking a chic cut-out swimsuit during her family vacation in Costa Rica on Friday.

The 38-year-old makeup mogul left little to the imagination in the electric blue couture as she spent her time sunbathing by the pool.

Daring to impress, the mother-of-four flaunted her fabulous physique as the barely-there suit proved skinтιԍнт.

A peek at her ample cleavage was had as the reality star leaned over to keep hydrated with a bottle of water.

Her gorgeous gams were on thrust on center stage as the swimsuit bottoms cut thigh on her toned and tanned thighs.

Allowing her natural good looks to shine, the aspiring lawyer went virtually makeup free with just a dab of berry lip.

Meanwhile, Kim’s older sister Kourtney turned up the heat as well as she revealed her impossibly toned boy in a Christian Dior ʙικιɴι.

The Multicolor Rasta Mania ʙικιɴι retails for $740.

And Kourtney looked every inch the cover girl in the luxury swimwear as she paraded around the pool taking selfies.

She slicked back her signature brunette locks into a loose ponytail allowing a view of her natural beauty.

Her toned and taut tummy was showcased as the mother-of-three slipped her enviable frame into the two-piece

Parading around the luxury resort, Kourtney’s pretty pins looked toned and tanned.

And fans were treated to an eye-popping display as her flawless backside was revealed in the tiny bottoms.

Later in the day, Kim and Kourtney were spotted arriving to the airport.