There's no such thing as sibling rivalry in Tinseltown

Penelope and Monica Cruz-

These Spanish sisters came from a gene pool of gold. Penelope has been on the scene as one of the sexiest women in the world for a while - plus she hooked up with Scarlett Johansson in Vicky Christina Barcelona.

Monica is a professional ballet and Flamenco dancer. She's now crossed over into acting can be seen on the big screen in 2010 in the movie Iron Cross.

Want more?
Check out Penelope's Girls of Maxim gallery

Joanna and Marta Krupa-

Maxim's August covergirl has another half that's smoking hot as well! Joanna and Marta have participated in some hot photoshoots together and Marta also has some kickin' curves.

Want more?

See Joanna's Girls of Maxim gallery
Then, check out her Girls of Stuff gallery.
And, check out Joanna's weekly DWTS blog.

Heidi Montag-

The blonde The Hills stunner was sexy before her, uh, enhancements, but now she's even hotter. Luckily, the Montag parents produced not just one, but two hot daughters.

Get More:
See Heidi's Girls of Stuff gallery
Check out her Girls of Maxim gallery

Then check out her The Hills costars:
Audrina Patridge
Kristin Cavallari

Holly Montag-

Holly can be seen on MTV's The Hills along with little sister Heidi. She also replaced Heidi and Spencer on I'm a Celebrity, Get Me Out of Here!

Check out her The Hills costars:
Audrina Patridge
Kristin Cavallari
Heidi Montag

Zooey and Emily Deschanel-

The Deschanel sisters are two talented blue eyed bombshells. Emily can be see on Fox's Bones and Zooey can be seen on the big screen as well as heard on the radio as 1/2 of the band sheandhim.

Get More:
Zooey Deschanel
Emily Deschanel
Hottest Women of Fall TV

Kylie and Dannii Minogue-

The Minogue sisters give men with a blonde fetish and men with a brunette fetish a reason to cheer. These Australian musical stunners also tease us a bit on the small screen.

Want More?:
Check out Kylie's Girls of Stuff gallery

Jessica Simpson-

The Simpson Clan is full of some sexy ladies. Jessica is a sexy blonde singer and actress most notably known for costarring with Dane Cook in Employee of the Month, or for being blamed for Tony Romo's football woes.

Want more of Jessica?
See her Girls of Maxim galleries 1 | 2

Ashlee Simpson-Wentz-

Ashlee Simpson-Wentz is the younger sister of Jessica Simpson. Her character may be getting killed off Melrose Place after a short stint on the show, but we'll find other ways to follow this fiery red head (for now).

Get More:
Check out Ashlee's photo gallery

Ashley and Mary Kate Olsen-

Mary Kate and Ashley grew up right before our eyes - and blossomed into hot millionaires. These twins sure have come a long way since Full House.

Want More?
Check out Ashley's photo gallery
See more Hot Child Stars Grown Up

The Kardashians-

Kim, Khloe, and Kourtney Kardashian come from one sexy yet diverse gene pool. You can catch up with them on E!'s Keeping Up With the Kardashians or Kourtney and Khloe Take Miami - but make sure "your girlfriend forces you to watch" so that you don't look like a horny loser.

Get More:
See Kim's photo gallery.
Then, check out Kourtney.

Sienna and Savannah Miller-

Sienna Miller is one blonde bombshell actress, and the apple didn't fall far from the tree with her sister, Savannah, a clothing designer.

Get more of Sienna, check out her Girls of Maxim gallery.

Britney Spears-

Oops she did it again - Britney's had her ups and downs, but lately she's on fire and got her groove back!  Britney's little sis - Jamie Lynn is just as hot.

Jamie Lynn Spears- Jaime Lynn reminds us of Britney is her schoolgirl outfit wearing days. Now that she's 18, it's okay to look.

Paris and Nicky Hilton-

These sexy socialites keep our engines revved for more. Nicky and Paris are both models and fashion designers known for their great looks and huge inheritance.

Check out Paris' Girls of Maxim gallery. Then, drool over Nicky's Girls of Stuff gallery.

Hilary and Haylie Duff-

Hilary and Haylie are two sexy actresses and singer-songwriters who light up the big screen.

Check out Hilary's Girls of Maxim gallery, then take a peek at Hayley.

Beyonce and Solange Knowles-

These bootylicious sisters can steal our attention anytime. We definitely think we're ready for their jelly.

Check out Beyonce's Girls of Maxim gallery, then Solange is calling for you.