"I Luv It", with Playboi Carti, was released as the album's lead single on March 27, 2024. The song debuted and peaked at number 81 on the US
Billboard Hot 100. "He Knows", with Lil Nas X, was released as the album's second single on May 10, while "Chanel No. 5" was released as the album's first promotional single on June 21. "Hot Uptown", featuring Canadian rapper Drake, impacted US
contemporary hit radio as the album's third single on June 28, 2024. On August 29, 2024, Cabello announced the
Magic City deluxe edition of the album, releasing on September 6, 2024, alongside the first single "Godspeed" and its music video also being released on the same day.
Live performances On April 19, 2024, Cabello appeared as a surprise performer during
Lana Del Rey's set at
Coachella; she performed "I Luv It" with the singer. She then appeared as a speaker at the guest panel of
American Express and
F1 Academy's event, "A Celebration of Women with Drive", on May 1—where she performed an acoustic version of "I Luv It" and the then-unreleased album track "Twentysomethings". Cabello performed "I Luv It" again on the
June 12, 2024 episode of
The Tonight Show Starring Jimmy Fallon. To promote
C,XOXO, Cabello performed at multiple festivals; she revealed that the vision for her performances was "[this] magical world that [Cabello] and the XOXO girls and guys can all live in for a while". She debuted music from the album at the
Rock in Rio Lisboa and
Mawazine festivals on June 23 and 25, in
Lisbon and
Rabat. Following the album's release, she performed at Tinderbox in
Odense, on the Other Stage at
Glastonbury, at Hera HSBC in
Mexico City, and the
iHeartRadio Music Festival in
Las Vegas, between June and September 2024. Cabello's festival performances' production consisted of "dancers [in]
Cyberdog-esque outfits", "robotic camera dog[s]", "
BMX riders [on] skate ramps",
DIY described her Rock in Rio Lisboa set as "a high-budget production" wherein Cabello "[was] determined to commit to the bit, and [did] so with aplomb", The Rock in Rio Lisboa concert was recorded and subsequently released on September 5, 2024, as an Apple Music Live exclusive with both a film of the concert and a live album, on
Apple Music and
Apple TV+. On September 11, Cabello performed "Godspeed", the lead single of the album's
Magic City Edition, at the
2024 MTV Video Music Awards; a recording of her singing the opening of album track "
June Gloom" was used as a precursor. By the end of September, she performed stripped renditions of "Godspeed", "June Gloom" and
Addison Rae's "
Diet Pepsi" on the
Live Lounge. A series of official
Vevo live performances of several songs from the album, filmed "indoors for a 90s, bubble-gum pink vibe", was released throughout October. Cabello performed on December 21 at the Miami show of
iHeartRadio's 2024
Jingle Ball Tour. Cabello embarked on her second headlining concert tour, the
Yours, C Tour, in June 2025 to promote the album. == Critical reception ==