Steven Tyler and Erin Brady
Who are they? Erin, 38, is a model, and do we really need to introduce camp-as-a-row-of-tents Aerosmith rocker, Steven Tyler, 68, who's also American Idol's kookiest judge? His one-liners were mind-boggling. Our fave? "Confucius says crowded elevators smell differently to midgets." We have no idea either.
Relationship status They met in 2006 - came to Dubai to party at Cavalli Club in 2009 - and got engaged last month.
Key similarity point Big pouts, oval faces, luscious locks - they both look like Janice Dickinson. Dude looks like a lady.
Fashion tip Overdo it. All the time.
Nikki Reed and Paul McDonald
Who are they? Nikki, 23, plays vampire Rosalie Hale in Twilight and Paul, 27, was a 2011 finalist on American Idol (which starts again next week!)
Relationship status They met at the premiere of Little Red Riding Hood last March (Nikki blushed when she first met Paul), became engaged in June and got married in October in Malibu. Divorced by next March? We hope not.
Key similarity points Take away Paul's beard and the bottom half of their faces are identical: their wide smiles are both the shape of upside down 'taches.
Beauty tip How do they keep their pearlies so bright? Maybe they rub rare Icelandic snow on their teeth? Or just brush after every meal (and have constant whitening treatments)?
Jessica Alba and Cash Warren
Who are they? Cash Warren, 34, is a producer - but is best known as the guy who scored Jessica Alba, 30. Jessica rose to fame in TV series Dark Angel, and is in films including Valentine's Day.
Relationship status They met in 2004 while filming Fantastic Four - Jessica starred and Cash was working as an assistant - and married in 2007 at the Beverly Hills courthouse. They now have two daughters - Honor, three, and Haven, three-and-a-half months.
Key similarity points Honey skin, high foreheads and the same noses, eyebrows, cheeks - well, pretty much everything!
Beauty tip Have great genetics.
