Stacy was born in Kota Kinabalu, Sabah, to Anam Bayar and Agnes Kallos. She studied at St. Michael Penampang Secondary School. Due to her family's financial problem, she had no choice but to drop out of school when she was in Form 4.^[2]. In order to support her family, she became a singer in local clubs.

Prior to her audition for AF6, Stacy tried out for other notable singing reality shows, such as One in a Million 1, and also Gang Starz in which she teamed up with her brother, Camellus De'lleli Anam, to form a group named E-voke. However, she only made it to the semi-finals before they were booted out. Her decision to audition for AF6 was derived from her mother's suggestion as soon as she turned 18.

Stacy was also given a full scholarship to continue her studies in Limkokwing University Of Creative Technology. She is currently continuing her studies in diploma of music and art, and began her first semester on February this year.^[3]

Stacy competed against thirteen other contestants to win Season 6 of Akademi Fantasia. The judging panel often harbours her performances with praises every week for being consistent, which implied her as the front-runner of the season.

Ramli M.S., the academy principal of AF6 complimented Stacy as a loyal student who is very serious in learning something new. According to him, Stacy is always focus during each lesson and applied all the lessons that she learned during her performances on stage.^[4]

Throughout the competition, Stacy remained at top three when the voting session was closed at the end of every concert, with four collective highest votes. Before the finale concert, 3 out of 4 media reporters predicted her to be the winner of the show.^[5] At the end of the finale, the prediction came true when she was crowned as the sixth winner of the show, beating 4 other students, with a massive votes of 43%.

Stacy's coronation song "Aku Stacy" was released immediately after her win and it became a huge success. The song quickly became her first number one single in Carta Era for two weeks, as well as topping Carta 30 Era at number one. It stayed in the chart for 22 weeks, making its own history as one of the songs that stayed in the chart for a long period of time. The single also entered Muzik FM chart at number 9. The song slowly climbed to top the chart at #1, making it as Stacy's first #1 single in the chart. In Hot FM 30, the song only managed to peak at number 14 before finally dropping out from the chart. In Muzik Muzik, it peaked at #3.

Following the successful release of her first single, Stacy's own show "Aku Stacy" was launched in Astro Ria. The show featured her journey in the entertainment industry after her win. In the meantime, her first compilation live album, The Best of Stacy was released in September 2008 which featured all of her ten performances in Akademi Fantasia, excluding the fifth concert. The album was well-received as it sold thousand copies in the first week.

In December 2008, the song "Aku Stacy" made it to the final round of Anugerah Juara Lagu, an annual award show in Malaysia to honour the best Malay song every year, a rare accomplishment made by newcomers in the industry. Despite her busy schedules to be fully prepared for the award, Stacy's second single, "Gagap", premiered in the season finale ofSehati Berdansa. The song is commercially successful as it becomes her second single to reach Top 5 in most charts. In Carta Era, the single has peaked at number 2 and was held off byAdam's "Benar-Benar". In Carta Hot Fm, the song debuted at number 17 and went to peak at number 5. The song also entered Carta Muzik FM at number 10, and is currently peaking at number 4. In Carta Muzik Muzik, the second peaked at number 2, being held of by Adam's "Benar-Benar".

Along with Nubhan, fellow student of AF6, Stacy was listed fourth in Murai's list of "Most Outstanding Newcomers of 2008".^[6]

In February 2009, Stacy was short-listed as the top 5 finalist for three major categories in Anugerah Bintang Popular, namely Most Popular Artiste, Most Popular Female New Artist, as well as Most Popular Female Singer^[7], where she was voted as the Most Popular Female New Artist.^[8]

Stacy was also given a certificate of recognition by Sabah's Ministry of Sport and Youth (KBS) for her on-going efforts to improve herself as a newcomer in entertainment industry. She was also recognized as Sabah's youth icon and idol in the entertainment industry.^[9]

Her debut album, Aku Stacy, was released on March 9, 2009. She worked closely with notable local composers such as Ajai, Adi Mok as well as Edry KRU. Just like the previous winners of Akademi Fantasia, she gets the opportunity to launch her album in her own town which takes place in Kota Kinabalu.

Stacy's third single, "Pakai Buang" was released on May 9, 2009. The song slowly climbs national charts and so far is peaking at #5 in Carta Muzik FM. In Carta Muzik Muzik, "Pakai Buang" debuted at number 5 and is currently peaking at #4.

In June 2009, Stacy was nominated in Shout! Awards 2009 for the category of Popstar Award,^[10] in which she won.^[11] She was also being nominated in two categories of 2009 Anugerah Planet Muzik, which are Best Vocal Performance in a Song for New Female Artiste as well as Most Popular Malaysian Artiste which was won by Datuk Siti Nurhaliza by only one percent. Stacy was voted second.^[12]