The A to Z guide to 2015

From weddings to record-breaking milestones, <em>Hello!</em> rounds up the biggest celebrity highlights of 2015.
<b>A ... Adele</b> <p>The British singer made a triumphant return to the music scene with her hit album <i>25</i>. Since its release on Nov. 20, the compilation has already sold more than seven million copies in North America and finished the year at number one on Billboard's Top 200.</p>
<b>B... Bob Brigade</b> <p>A parade of celebrities changed up their look this year, opting for chic and stylish short bobs. Katy Perry, Jenna Dewan Tatum, Sophia Bush and Emma Watson are a few of the A-listers who made the chop.</p> Photo: © Getty Images
<b>C... Caitlyn Jenner</b> <p>The <emi>'I Am Cait</em> star made her debut on the July cover of <em>Vanity Fair</em> proclaiming, "Bruce always had to tell a lie... I am free."</p>
<b>D... Drake</b> <p>Toronto-native Drake ruled the charts with his hit single <em>Hotling Bling</em>. The song's video also made waves because of the rapper's distinctive dance moves, which inspired hilarious memes and parodies.</p> Photo: © Getty Images
<b>E... Eva Longoria</b> <p>The <em>Telenovela</em> star got engaged to boyfriend José "Pepe" Bastón in December while vacationing in Dubai.</p> Photo: Instagram.com/evalongoria
<b>F... Famous Friends</b> <p>Taylor Swift isn't the only celebrity with high-profile pals. Gigi Hadid and Kendall Jenner, Amy Schumer and Jennifer Lawrence and Selena Gomez and Jennifer Aniston gave us serious friendship goals in 2015.</p> Photo: © Getty Images/Instagram/Getty Images
<b>G... Gisele</b> <p>After 20 years in the industry, the world’s highest-paid supermodel retired from the runway. She walked her last catwalk during Sao Paulo Fashion Week in April.</p> Photo: © Getty Images
<b>H... Hiatus</b> <p>One Direction announced that they will take a break in 2016. The news came shortly after the band's fifth member, Zayn Malik, left the group in March to pursue solo projects.</p> Photo: © Getty Images
<b>I... Ioni Conran</b> <p>Canadian model Coco Rocha's daughter, born in March, became an Instagram star in 2015 thanks to her adorable pictures and clever captions.</p> Photo: © Instagram.com/ioniconran
<b>J... Justins</b> <p>It was a big year for Canada's famous Justins. While Justin Trudeau became the country's 23rd prime minister in October, Stratford's Justin Bieber proved he still has what it takes to own the charts after his fourth studio album <em>Purpose</em> debuted at number one.</p> Photo: © Getty Images
<b>K... Kanye and the Kardashians</b> <p>While accepting the Michael Jackson Video Vanguard Award at the 2015 MTV Video Music Awards, Kanye West announced he was aiming for the United States's highest office, promising, "I have decided in 2020 to run for president."</p> <p>In addition to his political proclamation, the rapper and his wife, Kim Kardashian, welcomed their second child, Saint, in December.</p> Photo: © twitter.com/kourtneykardashian
<b>L... #LoveWins</b> <p>Celebrities joined the world in celebrating the U.S. Supreme Court's historic ruling in favour of same-sex marriage. Following the landmark decision in June, President Obama tweeted, “Today is a big step in our march to equality. Gay and lesbian couples now have the right to marry, just like everyone else. #LoveWins."</p> Photo: © Getty Images
<b>M... <i>Mad Men</i></b> <p> The AMC drama, starring Jon Hamm, January Jones, Elizabeth Moss, Christina Hendricks, Jessica Pare and Kiernan Shipka, aired its final episode after seven award-winning seasons.</p> Photo: © Getty Images
<b>N... Newbies on Instagram</b> <p> David Beckham, Liam Hemsworth, Celine Dion, John Krasinski, Robert Downey Jr., Ryan Reynolds and Adele are just a few of the stars who made their debut this year on the popular photo sharing app.</p> Photo: © instagram.com/davidbeckham, instagram.com/liamhemsworth, instagram.com/celinedion
<b>O... Over! (*tears*)</b> <p>Some of Hollywood's most beloved couples called time on their relationships this year including Gwen Stefani and Gavin Rossdale, Ben Affleck and Jennifer Garner, Blake Shelton and Miranda Lambert, Megan Fox and Brian Austin Green and Kate Hudson and Matt Bellamy.</p> Photo: © Getty Images/FilmMagic
<b>P... Princess Charlotte</b> <p>The latest addition to the Cambridge family was born May 2, 2015. After leaving the Lindo Wing at St. Mary's hospital in London, little Charlotte wasn't seen again until June, when the palace released adorable portraits featuring the princess alongside her big brother Prince George. And after a serene appearance at her christening service in July, Charlotte was all smiles and full of play when it came time to pose for her first solo portraits, snapped by her mom the Duchess of Cambridge, in November.</p> Photo: © HRH The Duchess of Cambridge via Getty Images
<b>Q... Queen Elizabeth</b> <p>The Queen became Britain's longest-reigning monarch on Sept. 9, beating the record set by her great-great-grandmother, Queen Victoria.</p> Photos: © Getty Images
<b>R... Rock This Country Tour</b> <p>As promised, Shania Twain thrilled fans one last time during her final sold-out North American tour. In addition to retiring from the road, the singer also passed her 50th birthday on Aug. 28.</p> Photo: © Getty Images
<b>S... <i>Star Wars!</i></b> <p>The anticipation for the seventh instalment of the science fiction franchise was almost as big as the splash the film made at the box office. In just 12 days, <em>The Force Awakens</em> scored more than $1 billion in ticket sales, securing the title of the biggest opening weekend and second-week opening movie of all time.</p> Photo: © Getty Images
<b>T... Taylor Swift</b> <p>The "Bad Blood" singer's <em>1989</em> world tour made headlines thanks to special appearances by the 26-year-old's famous squad and other musical icons. From Mick Jagger to Alanis Morissette to her best friends Hailee Steinfeld, Gigi Hadid and Lily Aldridge, Taylor's stage was never without star power.</p> Photo: © Getty Images
<b>U... Undercover Weddings</b> <p>Jennifer Aniston and Justin Theroux surprised the world when they said "I do" during a private ceremony at their Bel Air home in August. Other stars that pulled off secret weddings include Mary-Kate Olsen and Olivier Sarkozy and Mila Kunis and Ashton Kutcher.</p> Photo: © Getty Images
<b>V... Vegas Queens</b> <p>Celine Dion returned to the Las Vegas stage in August after taking a break from her residency to care for her husband René Angélil, while pop princess Britney Spears continued to deliver high-energy performances during her own residency on the famous strip. Come January, the singers will have some company when Jennifer Lopez sets up shop at Planet Hollywood.</p> Photo: © Getty Images
<b>W... White House visits</b> <p>1600 Pennsylvania Ave. attracted many royal visitors this year with Prince Harry dropping by for a chat in October while Spain's King Felipe and Queen Letizia met the Obamas in September.</p> Photo: © Getty Images
<b>X... Xavier Dolan</b> <p>This year, the Canadian director, seen here with Sienna Miller, scored a spot on the jury at this year's Cannes International Film Festival and was chosen to direct Adele's hotly anticipated video for her hit single <em>Hello</em>. The Montreal native also secured an A-list cast, including Jessica Chastain and Susan Sarandon, for his debut English speaking movie, <i>The Death and Life of John F. Donovan</i>.</p> Photo: © Getty Images
<b>Y... Yolanda Foster</b> <p>The <em>Real Housewives of Beverly Hills</em> star continued her battle with Lyme disease while dealing with a rocky marriage to music mogul David Foster. The couple of nine years later announced their split in early December.</p> Photo: © Getty Images
<b>Z... <i>Zoolander</i></b> <p>It what could be the most fashionable publicity moment of all time, Derek Zoolander (Ben Stiller) and Hansel (Owen Wilson) hit the runway at the Valentino show during Paris Fashion Week to get fans excited for the upcoming sequel (in theatres Feb. 12) to the hit 2001 comedy, <em>Zoolander</em>.</p> Photo: © Getty Images
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