These 10 couples were the most shocking/surprising hook-ups in Hollywood in 2009.

10. Britney Spears and Jason Trathwick

It was a delightful surprise to fans around the world when Britney Spears found love again.  The relationship proved that Britney was one step closer to regaining her freedom from her father, Jamie Spears, and leading a relatively normal life.

9. Emmy Rossum and Adam Duritz

It all started with a tweet.  Counting crows dared Emmy to come and sing with them and she did.  She then ended up on tour with them and that’s how she met Adam.  Emmy Rossum was married, though few knew, and split from her husband in August.  Shortly after, her relationship with Adam went public.

8. Lauren Conrad and Kyle Howard

This reality TV hook-up managed to stay out of the spotlight for a while because both stars were on different show, but like with anything else in Hollywood, there are no secrets.

7.  Renee Zellweger and Bradley Cooper

Jennifer Aniston thought she had snagged herself another man, but then Renee Zellweger swooped in and snatched Bradley up leaving both Jen and the world in a state of shock.

6. Katy Perry and Russell Brand

Katy Perry and Russell Brand didn’t try too hard to keep their love story a secret, shortly after meeting at the MTV Music Awards they were off on a romantic getaway to Thailand, but the relationship wasn’t actually confirmed until they were spotted walking side by side in London.

5. Tila Tequila and Casey Johnson

Tila Tequila is always full of surprises, but I don’t think anyone saw this coming.  It has only been a few months since Tila split from NFL player, Shawn Merriman, after the two had a fight in which Tila claimed Shawn assaulted her and now she’s engaged to the Johnson & Johnson heiress, Casey Johnson.  We’ll see if they actually make it to the alter in 2010.

4. Jennifer Love Hewitt and Jamie Kennedy

Jennifer was schedule to wed in 2009, but broke off her engagement with Ross McCall and three months later was linked to Jamie Kennedy.  Maybe he’ll have better luck getting her to walk down the isle.

3. Khloe Kardashian and Lamar Odam

This surprise couple decide to skip the whole dating scene and went straight for the marriage.  Their wedding took place just days after the world found out they were a couple.

2. Miley Cyrus and Liam Hemsworth

Miley broke Justin Gaston’s heart when she dumped him over the summer and she had us all fooled into thinking it was for Nick Jonas.  Many hoped that Miley and Nick had rekindled their romance, but turns out, this Disney star had her eyes set on someone else; Liam Hemsworth.  Miley stole Liam away from his Aussie love while they were filming The Last Song in Georgia.

1.  LeAnn Rimes and Eddie Cibrian

The grand prize goes to… MUTUAL CHEATERS, LeAnn Rimes and Eddie Cibrian.  They fell for each other while filming, Northern Lights, and tried to deny the romance after being spotted outside a Malibu Inn, but as always the truth came out.  Both LeAnn and Eddie are now in the process of getting divorced and are no longer hiding their relationship.