By Julia Andersen, CNN

(CNN) — Miyū Yamashita earned a dream birthday present after a composed fourth round at Royal Porthcawl won her the AIG Women’s Open a day after turning 24.

The newly crowned champion finished on 11-under, two-strokes ahead of Charley Hull and Minami Katsu.

It is the rookie’s first ever LPGA Tour triumph, making her the second player to notch her first tour win in a major this year after compatriot Mao Saigo achieved the feat at the Chevron Championship in April.

On a breezy day in south Wales, Yamashita kept Hull and Katsu at bay with a nearly blemish-free final round – a bogey on hole 17 her only slight stumble on the day. She continued sinking par putts, and her short game made the links course look easy.

England’s Hull tried mounting a late challenge

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