London Fashion Week is about to be a quarter-century old! (Insert joke here about quarter-life crises.) For its 25th anniversary, Elle  UK is sponsoring a huge ad campaign, which went up today in tube stations all over the city. Having commissioned 25 designers to make posters, it’s clear the magazine gave the artists free reign on what they could dream up, because most don’t even reference Fashion Week. Matthew Williamson’s design features a tie-dye print; Mulberry came up with a crafty “Love” slogan with a peace sign as the O; Paul Smith’s illustration features different colored hangers intertwined in a squiggly mess.

What we’re really finding awesome, however, is Henry Holland’s take (above), “25 yrs of L.F.W. and all you get is this lousy poster,” which inadvertently pokes fun at London Fashion Week’s struggle to keep up with Paris and New York. Check out some of the other Elle posters after the jump! [Elle UK]

Elle UK’s annual London issue is an homage to all things British, featuring the likes of Burberry’s Christopher Bailey as a guest editor, Brit songstress Lily Allen on the cover (watch a behind-the-scenes video of her shoot here) and ... tousled London Mayor Boris Johnson (yes, BJ for short) on a special edition cover? Johnson wrote the fashion mag’s editor’s letter and can be found, arms crossed over his chest, semi-scowling from the center of certain copies of the issue. Cute and cheeky or misguided and silly? [The Telegraph]

Check out this cute behind-the-scenes video of Lily Allen shooting “The London Issue” for Elle UK. Maybe she’s learned some modeling moves from her new bestie Kate Moss, because as mag photog Rankin notes, she kills it. Choice quotes include: “I love a wig on a celebrity”; “Lily is London”; “My weight fluctuates so much; the most important thing is being comfortable”; and “I thought she was gonna be cool, but she’s like, uber-cool.” [Pipeline]

Emma Watson‘s transformation into fashion goddess continues! [Elle U.K. via ONTD]