Pettersen held a healthy lead going into the final day’s play but a bogey on the par 5 9th, coupled with Munoz’s run of Birdies saw the Spaniard pull within one shot of the leager.
However, birdies on the 13th, 14th and 18th holes helped the Norwegian card a three-under 69 to win by five shots.
"It feels great to come here and defend my title and play as well as I did," Pettersen said. "It was very tough out there. Since the very first shot on Thursday, the conditions gave us a very big challenge."
Despite eventually falling short, Munoz was happy with her tournament.
"I was 4 under through 12 holes, and I was really playing really well," she said. "I made two bogeys coming in but I hit two really good shots and one came up short and one came up long, just misjudged the wind a little bit but I played really well."
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