In July 2015, she was featured in Ralph Lauren advertising alongside Australian singer Cody Simpson, and in October returned to the runway for Tommy Hilfiger and Philipp Plein.

[29] In June, Bieber walked for Moschino alongside high-profile supermodels such as Miranda Kerr, Alessandra Ambrosio, Jourdan Dunn and Chanel Iman[30] and in the same month she also made her debut in advertising for Guess.

[32] Along with Joan Smalls, Bieber was also the face of Karl Lagerfeld's limited-edition North American clothing line entitled "Love from Paris".

[34] In September, she took part in New York Fashion Week, walking for Tommy Hilfiger,[35] Prabal Gurung,[36] Jeremy Scott,[37] Tory Burch[38] and Matty Bovan.

[39] In London she made a personal appearance at a pre-London Fashion Week party at Stradivarius[40] where she provided social media presence via selfies and tweets.

[47] In 2017, Bieber was featured on the cover of Spanish Harper's Bazaar alongside male model Jon Kortajarena[48] and the British edition of Elle.

[56] On June 19, 2016, she co-hosted with model Gigi Hadid announcing a live exhibition by Shawn Mendes at the 2016 iHeartRadio Much Music Video Awards in Toronto, Canada.

[57] Beginning on May 2, 2017, Bieber began hosting a new TBS show Drop the Mic with rapper Method Man, featuring four celebrities facing off in a series of rap battles.

[66] Bieber's first career aspiration was to become a professional classical ballet dancer, but her training ended due to a foot injury.

[75] As of 2024, Bieber primarily resides with her husband Justin in La Quinta, California, previously having lived in their lakefront property in Cambridge, Ontario in Canada.

"[89] In May 2022, Bieber appeared alongside almost 160 other celebrities in a "Bans Off Our Bodies" full-page advertisement in the New York Times advocating for reproductive rights.

[91] In a 12-minute video she posted on her YouTube channel, she revealed she had suffered from a transient ischemic attack, caused by a patent foramen ovale and had surgery to repair the heart defect.

[93] On April 20, 2023, Bieber issued a statement about her mental health in which she revealed that she had been "fragile" since the beginning of the year after dealing with online rumors of an alleged feud between her and pop-singer Selena Gomez sparked controversy over social media.