10 Biggest Celebrity Splits of 2013

Some breakups shocked us (Khloe & Lamar!) while others we saw coming (Miley & Liam)

Sometimes, you see them coming from a mile away. Other times, you're completely blindsided. We're talking, of course, about celebrity break-ups. This year, a few couples stunned us with the announcement that they were over. Others made us wonder what took them so long. Here are the 10 celebrity splits that had the biggest impact in 2013.

Miley Cyrus & Liam Hemsworth (September) - The "Wrecking Ball" singer had the biggest year of her career, but she ended up leaving fiance Hemsworth in the dust. Fortunately, both Cyrus and the Hunger Games star seem to be doing just fine.

Khloe Kardashian & Lamar Odom (December) - Rumors of Lamar's infidelities had been floating around for months, but the true cause of their marital strife -- his drug abuse -- came as a major shock.

Miranda Kerr & Orlando Bloom (October) - How can two people this beautiful lose interest in each other? After three years of marriage, the parents of Flynn, 3, announced their amicable separation.

Justin Bieber & Selena Gomez (January) - This one was a long time coming, but given the size of their combined teenage fan base, it probably broke the most hearts.

Michael Douglas & Catherine Zeta-Jones (August) - Are they over? Are they back on? It's still not clear what path this Hollywood power couple has chosen, but they've certainly been through a lot together -- not least of all, 13 years of marriage.

George Clooney & Stacy Kiebler (July) - George Clooney couldn't make a long-term commitment. No surprises there.

Ryan Seacrest & Julianne Hough (March) - The world's busiest celebrity couple finally decided they were too busy for each other.

Nina Dobrev & Ian Somerhalder - This break-up was mourned by Vampire Diaries fans, who expressed their grief largely in GIF form.

Michelle Williams & Jason Segel (February) - If there's one celebrity break-up that made us cry "Noooo!" out loud, this was it. We just want them both to be happy! And they seemed so very happy with each other -- for a year, anyway.

Idina Menzel & Taye Diggs (December) - They seemed like a fairytale couple, complete with the best meet-cute ever: they fell in love while starring in the original cast of Rent. The separation announcement came out of nowhere, and musical theater fans may never recover.

Donna Kaufman is a freelance writer and iVillage contributor. Find her on Twitter and Google+

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