Before this season of 90210 concludes, a character will reveal herself to be pregnant.

We know who it is. But it's no fun to just come out and tell you! So, let's play a game:

Below, we've listed the candidates to be knocked up, along with the reasons why viewers should suspect them. Tomorrow, we'll update this article and announce the individual that's actually expecting, so remember to visit TV Fanatic 24 hours from now.

Until then, let the guessing begin...

NAOMI: She and Liam are having a lot of sex - and AnnaLynne McCord is on record as saying the season finale ends with a shot of her character's face.

SILVER: Her and Teddy are getting serious. We assume intercourse will soon follow. And, as Bristol Palin has proven, we all know what can happen if you're not careful.

JEN: She's definitely coming back this season, that much is confirmed. Might she have startling news for Ryan?

DEBBIE: Her and her Yoga teacher are getting close, and Rob Estes is leaving the show. Could Harry pack up and move away because his wife's affair results in a pregnancy?

KELLY: She hasn't been seen in awhile, but is expected back for one final episode. Perhaps she's visiting Dylan. We all know the physical chemistry these two have always shared.

One of these women is pregnant on 90210. Who do you think it is?

** UPDATE: Ready for the reveal? Read on...

It's Jen! The character will return later this season and drop a bombshell on Ryan: they'll be in each other's lives for at least the next 18 years.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.