Smashbox Girl, Please is a warm brown with a pearl finish that is permanent and retails for $24.00. In comparison, YSL Ambiguous Chestnut (216) is a warm brown with a glossy finish that is permanent and retails for $38.00.
YSL Ambiguous Chestnut (216) is 90% similar — it is less shimmery, lighter, less pigmented, cooler.