If there's one person who has Justin Bieber's back, it's definitely his wife, Hailey Baldwin. In the first clip from the upcoming episode of Carpool Karaoke: The Series, Hailey took a lie detector test with BFF Kendall Jenner, and she wasn't afraid to lie for her husband. After Hailey was asked whether Justin thought Kendall was cool, the model laughed before giving her answer. Yikes! Another clip was released on Friday, and this time around, Hailey and Kendall were joined by a special guest: Miley Cyrus! Unfortunately, the girls didn't belt out Miley's new song, "Nothing Breaks Like a Heart," but they did sing "Party in the USA." Watch the sneak peeks ahead, and catch the entire episode on the Apple TV app.