Nicola Peltz at 'Transformers: Age of Extinction' film photocall on July 29. Credit: Masatoshi Okauchi/Rex/REX USA (3)

White hot!

Nicola Peltz proved yet again that she's a worthy style crush. For a press conference in Tokyo on July 29, the Transformers: Age of Extinction star, 19, successfully skirted the line between lady and bombshell in a gorgeous cream dress.

The Dior frock featured a demure front with long sleeves but offered a hint of sexiness with the thigh-high side slit and open back with a lace-up detail. She skipped statement jewelry or brightly colored pumps for simple earrings and nude heels.

In keeping with the classic look, Peltz kept her hair and makeup soft and natural.

In late June, Peltz set the tone for her impeccable style during a worldwide media tour for the summer flick. She wowed in chic silhouettes that offered an edgy twist like the long-sleeved Stella McCartney gown with an open back at the Berlin premiere on June 29.