Whoa! Thank GOODNESS Alessandra Ambrosio didn't really go blonde because while she's a stunning beauty no matter what, we have a feeling her modeling gigs would have taken a nosedive if she had really lightened her locks!

The Victoria's Secret supermodel joked with pals outside of a house party, on Friday. As she walked off the property to head to her car, she teased photographers about her new look and while all the paps were telling her house great she looked, she couldn't contain her laughter and quickly pulled the blonde wig off her head. Whew!