What happened in the world of fashion this week? Check out our handy recap below.

Nicole Richie and longtime boyfriend and baby daddy Joel Madden tied the knot. The bride wore a gorgeous Grace Kelly-inspired gown by Marchesa (and two other Marchesa frocks throughout the night) and Neil Lane jewels. [StyleList]

Speaking of wedding frocks, a gaggle of designers, including Karl Lagerfeld, Vera Wang, and Christian Lacroix, submitted sketches of their fantasy wedding dress for soon-to-be-royal Kate Middleton. [StyleList]

Middleton and her fiance Prince William also continued to make headlines with the release of their Mario Testino-shot engagement pictures. Middleton opted to do her own makeup and wear a simple dress by Reiss. [StyleList]

In American royal news, Ralph Lauren's son David Lauren proposed to George W. Bush's niece Lauren Bush, setting up a wedding of epically preppy proportions. The solitaire sparkler that Bush received is estimated at $80,000 to $100,000. [StyleList]

Iconic French Vogue editor Carine Roitfeld is leaving the boundary-pushing magazine after 10 years at its helm. She'll depart for new personal ventures at the end of January. [StyleList]

Mad Men's blonde bombshell January Jones stars in Versace's new accessory ads, posing nude except for a strategically placed bag and sunglasses. [StyleList]

Another woman with a distaste for pants, Lady Gaga, is celebrated in our 2010: The Year of Gaga slideshow. [StyleList]

"Plus-Size" model Crystal Renn stuns in Zac Posen's Pre-Fall 2011 lookbook. [The Cut]

And the Kardashian clan sent out this slightly creepy Christmas card, which is heavy on the designer duds. [StyleList]