Below are four new sneak peeks from tomorrow night's all-new episode of Grey's Anatomy, "Sweet Surrender." In the first, Izzie is officially in hard core wedding planning mode - but her doctor warns Richard that she needs to conserve her strength ...

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Poor girl. We hope she's able to pull through. Follow the jump for three more preview clips, and some little Grey's Anatomy spoiler clues for each courtesy of E! Online ...

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Grey's Anatomy spoilers for the above clips:

• Despite the difficult sitch Lexie finds herself in, the Grey sisters and their hot doctor boyfriends aren't estranged and conflicted for too long.

• Emotional detachment is bad for healthy relationships, but good for work as a trauma surgeon. Owen compliments a fellow doc - and we all know who it is by now - for possessing the characteristic of being calm under fire.

• Callie's dad is just getting started - later, he tries to kidnap Callie! Sort of.

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.