"GMA's" Amy Robach dressed up as Taylor Swift from the singer's "Bad Blood" video, and cardboard cutouts of her squad accompanied her.
Ariana Grande stopped by "Ellen" on Friday in a cute cow costume.
Josh Duhamel was dressed as Lloyd Christmas from "Dumb and Dumber" during his guest appearance on "Ellen" on Friday.
Paula Faris donned Katy Perry's Superbowl Halftime Show costume, which came with the famous left shark. She later tweeted a picture of her and Amy Robach dressed as Taylor Swift with the caption, "Now we got bad blood ..."
"The Talk" hosts dressed up as famous singers for an epic Lip Sync War. Beyonce, Sia and Madonna made a cameo.
Rachael Ray and her husband, John Cusimano, dressed in their prehistoric costumes on "The Rachael Ray Show" on Friday.
FOX News' "Fox & Friends" hosts dressed up as yummy breakfast foods, which included bacon, eggs, cereal, donuts and coffee, on Friday's show.
Chrissy Teigen dressed up as Guy Fieri on "FABLife" on Friday morning.
"Shameless" star Shanola Hampton dressed as a warrior princess on BET's "The Real" on Friday morning.
Steve Harvey was the Lord of his Haunted Manor during Friday's Halloween special on his show.
FOX 29’s Alex Holley took on Nicki Minaj and her "Anaconda" on Friday's newscast.
FOX 29’s Mike Jerrick recreated Ariana Grande infamous donut-licking incident on Friday morning's segment.
FOX 5’s Erin Como dressed as Miley Cyrus and obviously couldn't forget to stick out her tongue.
ESPN2’s "His & Hers" hosts Jemele Hill and Michael Smith also channeled their inner Lucious and Cookie Lyon from Fox's hip-hop hit.