From casual get-togethers to office parties and black-tie events, Gretta's got a look for every occasion and every age that'll last long after the holidays are over.

The 20-Something Couple

Dushane and his girlfriend Katja are having a house party and they want to keep it casual, so a black cocktail dress for her and a tie for him are not options! Dushane wants to know if he can wear color. "Definitely!" says Gretta. "And he can still wear this shirt after the holidays." The same goes for Katja's comfortable and stylish Gap ensemble, which has versatile pieces that'll last all season.

Dushane:

Gucci Pants Gucci Shirt

Katja:

Gap Fur Coat Gap Sweater Gap Bermuda Shorts

The 30-Something Couple

Doug loves texture and fabric, but doesn't want to get stuck with a one-time only holiday outfit. Plus, he's headed to a party straight from the office, so he's got to have something versatile. Gretta's solution? He can wear this shirt and tie to the office, and then add a velvet jacket for a perfect holiday ensemble. Christine has eight parties to go to this season. With this Intermix dress, she can have a few different looks, from a long dress to a mid-length skirt. Add a blazer and she's got another outfit.

Doug:

Etro Shirt Etro Tie Etro Pants Etro Socks

Christine:

Banana Republic Coat Intermix Dress Intermix Skirt

The 40-Something Couple

They need to go to a black-tie event, but Stuart doesn't want to wear a tux and Angela doesn't want a dress she's never going to wear again. Instead, Stuart is wearing a black velvet jacket, and he can get into the holiday spirit by adding some color to his tie or handkerchief. Angela is also wearing a tux jacket (which she can then wear with jeans to another party), and she'll get plenty of use out of the blouse and pants as well. They're all set for their black-tie event, which in general aren't that strict anymore.

Stuart:

Carolina Herrera Jacket Armani Pants Armani Tie Banana Republic Shirt

Angela:

Gucci Blouse Gucci Tux Jacket Gucci Tux Pants

The 50-Something Couple

Joel loves his black t-shirt ("it's like my woobie!" he says), but he wants to get into the holiday colors. This suede jacket adds a little bit of color, and he can still wear it with his t-shirt! Suzie wanted to wear holiday colors, but nothing too bright and something versatile. "I don't think if she wore this in March, you'd think 'Christmas,'" says Gretta, pointing out that Suzie can take off her jacket and wear the dress well into spring.

Joel:

Gucci Blazer Gucci Shirt Banana Republic Pants

Suzie:

Gucci Dress Gucci Blazer

All clothing provided by Americana Manhasset.

Gretta's got a few more tips on holiday fashion for men and women.

Get the 'cheat sheet.'