Pat McGrath Under Your Spell is a warm pink with a sparkle finish that is permanent and retails for $30.00. In comparison, MAC Bidi Bidi Bom Bom is a warm white with a sparkle finish that is limited edition and retails for $21.00.
MAC Bidi Bidi Bom Bom is 90% similar — it is less shimmery, lighter, less pigmented, warmer.