"90210" is one comeback show that doesn’t leave us yearning for what once was. The revamped version of the 90s sensation has a stunning cast that always delivers great drama. It’s full of crazed relationships, family feuds and scandalous friendships. But even with this attractive cast, "90210" always finds a way to add some quirky guest stars to the mix, and this season surely did not stray away from that norm. Lets take a look back at ten of the most lovable guest stars that have graced the "90210" set this season- and one huge name that is sure to make a stir in this season’s finale! 

10. Carly Rae Jepsen was the perfect guest to open the season! Her performance of "This Kiss" was surprisingly well received by viewers. Although everyone is quick to sing along to her catchy hit "Call Me Maybe", the singer often gets ridiculed for the superficial nature of her music. However, in the context of the episode, the easygoing singer was a great compliment to the playful environment of the summer concert. 

9. Nelly Furtado gave an electric performance when she starred as herself in the fifth episode of the season surrounding relationships gone awry. The singer's fierce attitude while taking the stage was duly noted by audiences, as this was the most watched episode of the season thus far! 

8. Carmen Electra guest starred as a dazzling dancer who helps Silver (Jessica Stroup) lead her secret double life as a burlesque performer in the same episode that Nelly Furtado guested in as well. Electra's role was controversial due to the nature of her on-screen profession, but her natural flare whilst portraying the sultry dancer came off so flawlessly that fans appeared very pleased with the actress. And luckily for viewers, Electra's character returned in later episodes. 

8. Ryan Lochte got oiled up for a quick cameo on the show, in which he appeared shirtless in the woods looking like “a gold medal”, according to leading female Naomi Clark (AnnaLynne McCord). However, audiences were saddened by Lochte's minimal role in the episode. Before the show aired, rumors circulated that Lochte would be doing some serious "acting" in the episode, when instead his cameo was short and lacked any real talent. But there was one good aspect to the scene - Lochte gave all of his fans a lengthy view of his swimmer's physique! 

7. Ne-Yo produced a soulful rendition of his hit “Let Me Love You” in the seventh episode of the season. Ne-Yo's performance was hailed as one of the best on the show and he was one of the few singers allowed to perform without any interruptions. 

6. Taio Cruz gave a dynamite performance of his new song “Fast Car”, in the 100th episode of the series. Unfortunately, Cruz didn't have much to add to the episode besides a little background music, but just the star's appearance livened the show for the night. 

4. Denise Richards guest starred as a stylish socialite in the eighth episode of the season, in which the whole gang headed back to West Beverly High for alumni events. Richards played a fiesty, older alum that Naomi is desperate to be on good terms with in order to get into the elite West Beverly High Alumni Group. Richards embodied her role perfectly, and her seamless performance was definitely one of the best guest cameos this season. 

3. Rita Ora beautifully performed the song "Shine Ya Light” off of her latest album in the “Misery Loves Company” episode. Some viewers were puzzled at the new artist's appearance on the show since she isn't too well known in the United States, but Ora performed wonderfully and she actually proved to be a great compliment to the drama surrounding both Adrianna and Dixon entering the music industry. In the end, Ora was very well received by "90210" fans! 

2. Tegan and Sara harmonized a bewitching rendition of their song “Messed Up”, in the holiday episode of this season. The Canadian duo's sweet music was the perfect backdrop for the heartfelt revelations of the episode. Just as the two began singing, Dixon (Tristan Wilds) revealed to his sister Annie (Shenae Grimes) that he would he was now able to walk again, after a horrific car accident left him badly injured. Tegan and Sara's music was just the right soundtrack for this tender family moment! 

1. Prince Michael Jackson is the celebrity teen that is predicted to make waves during this season’s much anticipated finale. The CW Network has revealed that Jackson will be playing a hospital patient of whom Silver takes a special interest in. This will be the young man's first acting role and it is believed he will use this as his break into Hollywood! 

Reach Staff Reporter Christianna Wiggins here.