Tonight, Ronan showed up to the 90th Academy Awards red carpet debuting a new haircut hitting just below her ears — and we were shocked. While stars tend to bring the glam for the biggest awards ceremony of the year, it's not often we spot a celeb with a fresh cut styled, well, straight. We knew the Oscars would be different this year — for more than one reason — but we didn't expect the first round of change to show up on the pre-show.