VOTE: Sexy sisters -- the hottest jodi!

Kate and Pippa, Katrina and Isabel, Penelope and Monica -- all these sexy siblings are genetically blessed. But who are the hottest twosome? Take our poll and let us know!

It certainly looks like good things come in twos -- and sometimes threes (!) -- when you take a look at these stunning sisters.

They thrive on each others' popularity; when one makes it big, it's only a matter of time before the other is noticed and starts becoming a star in her own right!

Here, we bring you some of the most beautiful, well-known siblings in showbiz. Vote and tell us who you think are the hottest pair around!

Katrina and Isabel Kaif

Kat is arguably the most in-demand actress in Bollywood and has slowly and surely made her way to the top, after a whole decade in the business. It seems like she doesn't want Isabel to face the same trials she did -- Miss Moneybucks is producing a film for her little sis to become B-Town's next big thing! Do you think the Kaif siblings are the sexiest you'll ever see?

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Her Royal Highness Kate and Her Royal Hotness Pippa are cruising at the height of superstardom ever since the royal wedding! It's safe to say that the two are the most talked-about and emulated pair of sisters in the world at the moment. But are they also the hottest?

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Malaika may be the bigger star, but there are frequent comparisons between these two bombshells as to who is more gorgeous. Amu obviously adores her older sis and has followed in her footsteps every step of the way, so no sibling rivalry here!

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Hollywood A-lister Penelope's doppelganger sis is also an actress and a dancer to boot. The two sirens share a close relationship and Monica even stood in for her heavily pregnant sister during the shooting of Pirates of the Caribbean: On Stranger Tides.

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While Shamita rose to fame as Miss Earth India 2001, Mashoom was noticed after appearing in the Kingfisher Calendar 2006. You would think that supermodel sisters would be competitive, but Shamita and Mashoom are the best of friends!

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This trio can't seem to get enough of publicity! Reality TV stars Kim, Khloe and Kourtney have become a household name and it's mainly due to their sultry appeal.

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Shilpa has cashed in on her good looks to create a business empire and while Shamita is still struggling in terms of her career, they're both definitely famous -- and definitely dazzling!

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The pop princess and former X Factor judge are both petite, pretty and talented. While Dannii's singing career never quite took off like Kylie's did, they've both won a huge fan following, each in her own right.

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Between them, they've upheld the reputation of the Kapoor clan as filmi royalty. Lolo was at the top of her game till her hiatus and then along came Bebo, to mesmerise audiences across the country. Both are highly successful and fiercely independent, but it's apparent that Kareena is immensely proud of and has a great deal of respect for her older sister for paving their way to silver screen popularity.

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When you're facing off against your sister for a tennis title and the world is watching, all family connections are forgotten for the moment. But the beautiful part about Venus and Serena's relationship is that off court, they're as close as two sisters can possibly be.

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Here's another tantalising threesome! Between them, Meghna, Sushma and Sameera have all the bases covered -- mesmerising model, tall, lithe looker and curvy cutie!

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Paris loves to hog the limelight, but her younger sister is much more low-key. Nicky's a fashion designer, so while they both share great genes, only one seems talented! Still, both the Hiltons are aces at making money.

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A sensation on the catwalk, Ujjwala has paved the way to supermodel stardom for her little sister. What is it about models and their siblings -- the hereditary good looks don't seem to miss any generation!

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These Polish-American sirens aren't afraid to flaunt their sizzling appeal and as the older sibling, Joanna is quite protective of Marta. Together, the models would be any man's fantasy!

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Bong beauties Riya and Raima are like two peas in a pod. They're both curvy, dusky young ladies and they enjoy each other's company immensely, working together, travelling together and just being there for each other.

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Britney's baby sister is all grown up and they're very close. Jamie Lynn stood by her sister during her very public meltdown a couple of years ago and the pop princess did the same for her when she became a teenage mom. But as far as the sizzle quotient goes, are they the hottest twosome in the world?

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The Deol sisters are a tight-knit unit. They're both talented Odyssey dancers like their mother and while Esha pursued acting, it took awhile for the shy Ahana to come to terms with her filmi background and embrace it. Last we heard, though, she's going to make her B-Town debut soon!

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The twins look so identical, you really can't tell them apart -- but in fact they're fraternal! The Olsens became TV celebrities as mere infants and have since graduated to fashion, with a clothing empire worth millions of dollars. In fact, they just may be the richest twosome on the list!

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Looks like every second Indian catwalk queen has a younger sister waiting to step out of the shadows! Anjali Raut has moved into modelling like her older sis Alesia and while she's certainly as pretty, here's hoping she's also as successful.

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The levels of fame achieved in the music industry by Beyonce and younger sibling Solange could not be more different, but they put it down to artistic differences and the duo are as thick as thieves. Solange thinks it 'disrespectful' when people say she lives in Beyonce's shadow, but rivalry seems to have no place in their relationship.

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Former VJ, television host, model, singer, actress -- between the three of them, the Dandekar sisters seem to cover the whole entertainment hog! Talent is one thing, but you can't deny that they're all very easy on the eyes too.

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When bubblegum princess Jessica was at the top of the music charts, younger sister Ashlee burst onto the scene with a radically different look and an alternative feel to her sound. It all soon changed when she got a nosejob and went blonde and glam like her sister. While both sisters' careers as singers seem short-lived, Jessica is now sitting atop a billion-dollar fashion empire and Ashlee is yet to make a mark as a super-celebrity. But they're both definitely sexy!

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Here's another story of one successful sis and another struggling within the same industry. Kajol is one of the nation's most talented, legendary actresses and Tanisha has delivered only box-office disasters. But both are lovely-looking and with the large age difference, it's highly unlikely that things are competitive in the Mukherjee household.

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While Lindsay's life has been something of a trainwreck in the past two years, there are a lot of fears that teenager Ali will be negatively influenced by her headline-grabbing sibling. But so far Ali is the typical Hollywood up-and-coming starlet -- music, commercials, modelling stints. And she provides a lot of support to her wayward sister.

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Pia may be more of a known face, but the fact of the matter is that the veejay-cum-model has followed Binal onto the runway. The twosome are stunning and there seems to be a lot of love and affection between them -- Pia has even been seen enthusiastically cheering her elder sister at fashion shows.

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And finally, we come to the famous Jackson clan. La Toya and Janet both rebelled against their strict upbringing with bold publicity, but while the former has always been slightly controversial, off-stage the younger Janet is painfully shy. Careerwise of course, she has reached great heights, while La Toya is more into cashing in on her surname.

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So which sisters are the sexiest? Take the poll and let us know!