By Amy Lawrenson

Last week Miley Cyrus tweeted pictures of hairdresser Chris McMillan highlighting and trimming her hair. Fast forward a week and the newly engaged actress has had her shoulder-length hair chopped off and is now sporting an undercut. Not exactly a wedding-appropriate hairstyle, is it?

It all started when McMillan instagramed a picture of himself and Miley, him poised to chop off her top knot, with the caption, 'Good bye bun. Stay tuned. @ NYC!'.

But the star received a backlash about her decision on the social networking site. In response to the negative comments she tweeted, 'if you don't have something nice to say don't say anything at all. my hair is attached to my head no one else's and it's going bye bye :)'

Crop and undercut done she followed her earlier tweet by saying, 'Never felt more me in my whole life'.

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