[8] Nicole was then introduced as Nikki Bella, and the twins had their first official match as a team on the November 21 episode of SmackDown, defeating Victoria and Natalya.

[27][28][29] Starting in November, the twins developed an on-screen relationship with The Colóns (Carlito and Primo), appearing in numerous backstage segments with them, and accompanying them to the ring.

[32][33] The date provoked a rivalry between the teams of The Miz and Morrison and Primo and Carlito, with the four competing for the affection of the twins, who were seemingly unable to choose between them.

[42] They developed a storyline feud with Katie Lea Burchill, when Nikki defeated her in a match by switching places with Brie behind the referee's back.

[47] On the January 4, 2010, episode of Raw, Brie participated in a tournament for the vacant WWE Divas Championship, but lost to Maryse in the first round, when a switch resulted in Nikki being pinned.

[56][57] In January 2011, both Bellas turned into villainous characters for the first time in their careers, when they discovered Bryan kissing Gail Kim backstage and assaulted her.

[68][69] The Bellas began to show friction for the second time since joining WWE in March 2012, after both twins lost to AJ Lee in singles competition.

[90]Upon the debut of the Total Divas reality television program in July, The Bellas returned and started a feud with their co-star on the show, Natalya.

[96] On April 6, 2014, Nikki competed at WrestleMania XXX in the 14-Diva "Vickie Guerrero Invitational match" for the Divas Championship, which was won by the defending champion AJ Lee.

[105] The next several weeks saw the twins fight in several backstage and in-ring segments, including a cameo appearance from Jerry Springer on Raw on September 8.

[109][110] This led to a match between the twins at Hell in a Cell on October 26, where the loser was forced to become the winner's personal assistant for 30 days, in which Nikki defeated Brie.

[112] Nikki received her title match against AJ Lee on November 23 at Survivor Series, which she won with Brie's help to become a two-time Divas Champion.

[114][115][116] Nikki then went on to retain her championship in three separate occasions – against Lee in a rematch on December 14, at TLC: Tables, Ladders & Chairs,[117] against Naomi two days later on SmackDown,[118] and against Paige at Fastlane on February 22, 2015.

[127] At Elimination Chamber on May 31, Nikki retained her title against Naomi and Paige in a triple threat match, with Brie banned from ringside.

[132] After weeks of Team Bella outnumbering Paige, Naomi, and Tamina, Stephanie McMahon called for a "revolution" in the WWE Divas division and introduced the debuting Charlotte and Becky Lynch as Paige's allies, while NXT Women's Champion Sasha Banks debuted as an ally to Naomi and Tamina, which led to a brawl between the three teams.

[137] On the September 14 episode of Raw, Nikki defended her title against Charlotte, who pinned Brie after the twins had switched places to win the match; however, since the title cannot change hands by disqualification, Nikki retained the championship, and in the process, became the new longest reigning Divas Champion in history, surpassing AJ Lee's previous record of 295 days.

[138] Nikki dropped the championship to Charlotte at Night of Champions on September 20, ending her reign at 301 days,[139] and failed to regain the title in a rematch at Hell in a Cell on October 25.

[140] Shortly after, Nikki went on a hiatus from television due to a neck injury which would require surgery,[141][142] but returned for one night on December 21, to accept the Slammy Award for Diva of the Year.

[144][145] In June, Nikki confirmed that she would no longer use her Rack Attack maneuver and began training with her sister's husband Daniel Bryan, who was teaching her a new finishing move.

[152] Bella eventually gained revenge as she defeated Carmella at No Mercy on October 9 and also at TLC: Tables, Ladders & Chairs in a no disqualification match on December 4 to end their feud.

[171][172][173][174][175] To even the odds, Ronda Rousey aligned with The Bella Twins, and the trio was able to defeat The Riott Squad at Super Show-Down in a six–woman tag team match on October 6.

[176] Two days later on the October 8 episode of Raw, after defeating The Riott Squad in a rematch, Nikki attacked Rousey, with Brie later following suit, turning villainous for the first time since 2015.

[184][185] On the second night of WrestleMania 37 on April 11, 2021, Nikki, along with her sister Brie, attacked Bayley, sending her rolling down the ramp, turning face once again in the process.

[189] On February 1, 2025, Nikki Bella made a surprise return to WWE as the final entrant in the 2025 Women's Royal Rumble match.

[194][195] Nikki and Brie co-starred in the 2014 independent film Confessions of a Womanizer, and provided voices for the 2015 movie The Flintstones & WWE: Stone Age SmackDown!.

[205] On August 21, 2017, Nikki and Brie launched their own wine label called Belle Radici in collaboration with Hill Family Estates and Gauge Branding.

[231] On August 29, 2024, Chigvintsev was booked into Napa County Jail on a felony domestic violence charge which involved him inflicting corporal injury on a spouse.

Napa County District Attorney Allison Haley declined to file criminal charges against Chigvintsev, stating there was not enough evidence to prove he inflicted injury to his wife.

[239][240] Nikki sought full custody of the child when she filed for divorce, requesting Chigvintsev have supervised visitation with their son and undergo anger management classes.

However, after a court hearing in Napa County, it was announced the parents will share joint custody of their son, as Chigvintsev had previously requested when he submitted his divorce response in September.