The outdo diva: one-upper. Thunder-stealer. Attention-grabber. Ugh ...

Your BFF is the best--literally. Whenever you have a moment of glory to spill, she has one even more amazing.

THE ONE-UP It's lunchtime, and your girls are all ears as you dish about your victorious weekend on the slopes. Just as you tell them about your best-ever time, your girl Kiera jumps in. She starts tellin' the crew about her cheerleading competition and how she won Miss Team Spirit. Seems like everyone's chilled on your ski-slope championship.

THE LOWDOWN Don't let her exclude you. Convos are all about the o1' back-and-forth. Instead of feeling left out, get back in the game. Compare notes on your celebrations. While she was snappin' pics of the team, you were sippin' cocoa with a cute 'boarder.

THE ONE-UP You confide in a pal that your parents have been fighting. A lot. Her response? "You should come to my house. It's like World War III in there sometimes." Then, she keeps ranting.

THE LOWDOWN Seems like your girl is trying to empathize but got carried away. After she lets it all out, ask her how she deals. She may have some killer advice. If not, see if you two can figure out a battle plan together.

THE ONE-UP You and your posse are malting it for post-holiday sales. The girls are wowed by your ultra-gorgeous $15 dress. Next thing you know, Sienna butts in, bragging about the designer jeans and pricey shoes her mom just bought her.

THE LOWDOWN Sadly, Sienna's showing signs of slacking security. So have a chat. Wait until you two are alone and ask her why the "I can top that." Keep it light, but remind her you like her for her, not her wardrobe.

THE ONE-UP Chem finals are returned today. Considering you've struggled this quarter, you're psyched when you see an 82. Your BFF Maria is practically sobbing. Her tear-worthy test grade? A 95.

THE LOWDOWN Looks like your perfectionist pal needs a li'l lesson in tact. Let her know she should be happy with her fridge-friendly grade--and that you are happy with yours. Then pair up for a study sesh before the next big test lest. Your score'll go up, and she'll feel like a smartie. Friendship: 100%!

BFF Giveaway

SWEET DREAMS! LittleMissMatched (littlemissmatched.com) has super sleepover swag for you and your BFF! The Pajama Party in a Box comes with everything you need for a sensational sleepover. Plus, we're throwing in sassy matching jammies! We have five sets, so log on to girlslife.com, look for Super Sleepover, and enter by Jan. 15.

BFF DILEMMA

My BFF invited me to a celebration (she's a diff religion). I wanna go but don't know how to act.

If your BFF invited you, she wants you there. She wouldn't want you to feel uncomfortable. Talk to her, and see if she can help you with what to do at the celebration. She wants you to have fun!

--Erin B., 14

I have been in this situation before. Don't be afraid to ask any questions. Be respectful, and try not to interrupt anything important like a prayer or song. You could also do some research online or at the library before the celebration.

--Ruby L, 12

If it is just a family celebration, religion probably won't even come up. You will be meeting her family members. Just be yourself. I'm sure your friend will help you if you don't know what to do.

--Callan S., 12