Why? Because they were hanging out together at the Nikolai von Bismarck exhibition launch party on Monday and it was weird and random.
It seems Beatrice is keen to win a few cool points (gosh knows she needs a few more under her belt after THAT dancing escapade).
Pixie was her usual fashion-forward self in a long floral print dress and most probably vintage leopard print coat, while Bea was dressed for, er, the office?
But Pixie wasn't the only fashion face in the who's who of royals at the event. Model and bride-to-be Poppy Delevingne was spotted with her fiancee James Cook. She looked cute in a red Aztec-print jacket by high street fave H&M, teamed with a simple cream cable-knit jumper, black skinny jeans and a striking clutch.