She might be considered one of the most beautiful women in the world, but it looks like even Amal Clooney has a hard time getting over her insecurities. Rumor has it that the newlywed feels "insecure" as she can't help but compare herself to her husband George Clooney's ex-girlfriends.

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According to OK! Magazine on Wednesday, Amal can't help but feel that she doesn't meet up to her husband's standards, despite the fact that she is already married to him.

A source told the site, "She's very hung up about George's former conquests, especially his romance with Stacy Keibler. It's as though she doesn't feel up to his standards, which is crazy, but she isn't nearly as self confident as she appears."

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What's more, it looks like George himself can't let go of his past, either.

The insider added, "George keeps everything from his past including keepsakes, photos and letters from all the women in his dating history. And while it serves as a nice memorial of his past relationships, it's making Amal feel insecure - and jealous!"

Even though Keibler herself has moved on with a new husband and a newborn baby, Amal apparently still can't stop worrying about her. "Amal recently came across some old photos of him and Stacy and it made her paranoid about the chemistry she and George share," the insider said.

So far, neither Amal nor George have commented on the rumors. The couple have been married since this past September. It is the first marriage for Amal and the second for George, who was previously married to actress Talia Balsam.

Tags: amal clooney George Clooney