But while, new to Kendall's wardrobe maybe, the bikini was not so new for one other of her sisters.
Kourtney was pictured wearing the exact bikini set back in November of last year, whilst "Christmas shopping" by the pool.
Whether a choice of sustainability or an in-the-moment decision, the condoning of hand-me-downs by the Kardashian/Jenner clan is refreshing to see.