The Nashville star's makeup artist Amy Orseman shared a photo of the actress' new do on Instagram Sunday along with the caption: "It's a fun work day when you get to watch @mrchrismcmillan give #haydenpanettiere a fab new [haircut]"
Chris McMillan is best known for being Jennifer Aniston's stylist and the creator of the iconic "The Rachel" haircut back in 1994.
News of Panettiere's new mane comes three months after she discussed her past hair disasters with People magazine and a week after it was confirmed that she was expecting her first child with fiancé Wladimir Klitschko.
The actress revealed she was engaged to the Ukrainian heavyweight professional boxer while visiting Live With Kelly and Michael in October 2013. The couple met at a book party in 2009 and dated until May 2011. They got back together in the spring of 2013.