That famous painting is "Walk on the Beach" (Spanish: Paseo…

That famous painting is "Walk on the Beach" (Spanish: Paseo a orillas del mar), painted in 1909 by the Spanish Master of Light, Joaquín Sorolla.
Quick Facts:
The Subjects: The two women are actually the artist's wife, Clotilde García, and his eldest daughter, María.
The Setting: It was painted on the beach in Valencia, Spain.
The Style: It is a masterpiece of Luminism (a subset of Impressionism), focusing on the brilliant effects of sunlight on white fabric and moving water.
Why it's a masterpiece:
Sorolla’s use of white is legendary. If you look closely, the dresses aren't just "white"—they are composed of blues, yellows, and purples to reflect the sky and the sand. The way the wind catches the veil and the dress gives the painting a cinematic, "captured-in-the-moment" feeling.
The original is currently on display at the Museo Sorolla in Madrid, which was actually his family home.