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We hope she's not actually expecting!

Lindsay Lohan caused quite the stir late last night when she tweeted she had a bun in the oven!

"It's official. Pregnant..." the troubled actress posted to her account.

Although we are almost positive it was an April Fool's Day joke, there is always the possibility she's telling the truth. After all, Lilo did just start dating City of the Sun musician Avi Snow, so...

How unfortunate if she was pregnant and facing time in the slammer!