Celebrity Kylie Jenner's Life in the Spotlight: The Highs & Lows It's been a roller coaster year for the youngest sibling of the Kardashian-Jenner clan, who just ended her relationship with boyfriend Tyga By Grace Gavilanes Published on November 20, 2015 02:00 PM Share Tweet Pin Email Trending Videos 01 of 14 KYLIE MAKES HER MUSIC VIDEO DEBUT Leandro J./BFA Kylie, the music video vixen? The reality star has starred in Tyga's music videos, making her debut in "Stimulated" after their public appearance at the VMAs. 02 of 14 KYLIE LAUNCHES HER OWN APP, TOPS THE ITUNES CHART Jamie McCarthy/WireImage Along with her sisters, Kylie launches her own member-exclusive app, and it's quite ... revealing (or at least the previews are). Fans truly get to know Kylie, who even gave users a tour of her glamorous home. Oh, did we mention that Kylie's app surpassed her sisters' on iTunes? 03 of 14 KYLIE AND TYGA GO PUBLIC Kevin Mazur/WireImage Despite being together for a few months, Kylie and rapper Tyga make it official as a couple following the reality star's 18th birthday. However, the star reveals she will still stay mum when it comes to dating. "I don't think I will ever be super-public about my relationships," she told Elle Canada in her December issue cover shoot. 04 of 14 KYLIE TURNS 18 Courtesy Khloe Kardashian A birthday to remember! Kylie rings in her 18th year with a bang in August, celebrating with friends and family, including Tyga. Oh, and she got some pretty nice presents, including a Birkin bag and $320,000 Ferrari from the rapper. 05 of 14 KYLIE OPENS UP ABOUT BEING BULLIED Jason LaVeris/FilmMagic Four days into her social media campaign #IAmMoreThan – which showcased inspiring individuals that overcame adversity – Kylie shared how she has also been affected by bullying. "People are so quick to say horrible things about me every day over and over, and sometimes I can't take it," she wrote on her Instagram in September. "Even I at times get affected by it, I break down, I hide, I cry." 06 of 14 HER PICS BREAK THE INTERNET Courtesy Kylie Jenner From glamorous red carpet prep snaps and revealing workout selfies to belfies and bikini pics, Kylie is known to deliver double-tap-worthy photos on a regular basis. But, if we're being honest, they're nothing when compared to her Snapchat clips. 07 of 14 MAKING MOVES IN BUSINESS James Devaney/GC Images Step aside, Kim – Kylie is just as savvy when it comes to different ventures. Not only has the teen worked with sister Kendall on their own clothing line, but Kylie has branched out and launched her own line of – no surprise here – clip-in hair extensions as well as a lip prep kit. And if that's not enough, Kylie also serves as Britain-based Nip + Fab's brand ambassador. 08 of 14 KYLIE'S LIPS BECOME BIG NEWS Courtesy Kylie Jenner It was no secret that Kylie's pout started receiving attention after becoming noticeably plumper. While the youngest Jenner sister never denied any claims that she got her lips surgically enhanced, the reality star did credit her defined pout to lip liners. The truth behind Kylie's pout finally came out on an episode of Keeping Up with the Kardashians in May, revealing that the star had used temporary lip fillers. She later spoke about the lip frenzy in an interview with Elle Canada, explaining, "People were saying I got my chin reconstructed, that I got a nose job, an eyebrow lift, I got my boobs done, this and that. So I wanted to come out and say that this is crazy, and I only got my lips done." 09 of 14 KYLIE & TYGA BREAK UP Getty Three months after taking their relationship public, Kylie and Tyga broke up in November, which became apparent when the reality star did not make an appearance at the rapper's 26th birthday party. 10 of 14 KYLIE'S LIP KITS BREAK THE INTERNET Who knew so many people wanted to snag Kylie's plump pout? Apparently, the reality star had a hunch that was proven right following the launch of her Kylie Lip Kits in November 2015. Each pack boasts a liquid matte lipstick and lip liner, available in different shades. As is customary with anything KarJenner-related, the lip kits instantly sold out and continue to do so. "I love lips and gloss and working with these products," she previously told PEOPLE. "There is a big uptrend with lip liner, and I make my own. It is my passion." 11 of 14 KYGA GETS SERIOUS Source: Tyga/Instagram Tyga and Kylie Jenner 12 of 14 BLAC CHYNA & ROB KARDASHIAN START DATING Blac Chyna and Rob Kardashian. AKM-GSI In a move that took fans by surprise, Kylie's older brother, Rob Kardashian, announced via Instagram (natch) that he and Blac Chyna are indeed boyfriend and girlfriend in January – causing a rift in Rob's relationship with Kylie, who was "livid" and felt "betrayed," according to a source close to Jenner. Why? Rob's new love had previously been engaged to Tyga and also shares a child with the rapper, which makes for quite an awkward dynamic considering Tyga and the former model aren't on the best terms. 13 of 14 KYLIE HANGS OUT WITH BLAC CHYNA, CONFUSES EVERYONE Kylie Jenner/SnapChat Despite Rob and Blac Chyna's whirlwind romance (and subsequent engagement) the KarJenners didn't initially support, Kylie and Rob's newly minted fiancée – who recently announced she is expecting her first child with Rob – decided to play nice when they both posed for a photo on Kylie's Snapchat with the caption: "When we've been best friends the whole time." 14 of 14 KYGA BREAK UP (AGAIN) Source: Kylie Jenner/Instagram Kylie Jenner and Tyga