 Hailey Baldwin's blood moisturizers, Sandra Bullock's penis facials and Rihanna testing out eyebrows on a doppelganger. This week on MTV News Unfiltered, we look at some of the most extra-celebrity beauty routines. We also investigate how ugly shoes got so fashionable after Post Malone's collab with Crocs sold out in minutes. And speaking of garish fashion, we talk about why you should get in the spirit of Christmas Jumper Day. Breaking news! Rihanna tears potential eyebrow styles on a doppelganger before committing to the full look. In an entertainment weekly interview with Hollywood eyebrow master D'Amon Roberts, he discussed her Met Gala look, saying, As Detroit Princess tweets, She took out blood from my arm and put it into a machine that spins it and separates the plasma from your blood before putting it into a lotion for your skin. Cool. That's not even the weirdest skincare regimen out. Hollywood's recently gone hard for the penis facial, favoured by stars like Kate Blancher and Sandra Bullock. Apparently, it involves a serum made from stem cells cultivated from circumcised foreskins of Korean babies. Apparently. It's also £465. Or what about the time Charlotte Crosby and Cole confessed they used coca-cola or a self-tanner? There you have it folks, blood and doppelgangers. And I thought using olive oil when I ran out of makeup wipes was extra. Post Malone's second collaboration with your dad's favourite shoe brand, Crocs, sold out in minutes. Again. So, how did the humble Crocs ascend to such heady heights? Let's rewind. A couple of years ago, British designer Christopher Kane sent them down a spring-summer 17 catwalk, and then Balenciaga followed suit for spring-summer 18. ID Magazine later noted that these collabs changed the perception of the shoe from comfortable but ugly to expensive but fashionable. Their massive popularity also ties in with the last couple of years' overwhelming love for ugly shoes in general. We've had Hailey Baldwin and Bella Hadid embracing Balenciaga's triple S's, Rihanna lathering her legs up in thigh-high uggs, and Kendall Jenner trotting on the chunkiest of uses. Podiatrists worldwide, rejoice. But why the obsession? Could it be that as democracy crumbles around us, we crave a stable platform on which to wade through this mess? Has our 90s nostalgia got us craving chunky things like feelers and sketches, which are now all enjoying our anasons? Or are we just spending so much time hunched over screens that we're really concerned about our posture? Fashion ebbs and flows, humans are fickle, trends die. But given how quickly Post Malone's Crocs sold out, this one seems to have a little more legs. And long may it live. I have really flat feet and need to wear orthotics in all my shoes, and they don't fit in no Louboutons. What is it going on people? Today is Christmas jumper day, and I'm going to be raising money to save the children running around Kings Cross station, so if you see me, tap me on the shoulder, donate £2 for a great cause, and listen, together we can make the world better with a sweater. Another year, another Christmas jumper day. Yes, I know. Guerra's sweaters with pom-poms for Santa Rice are normally reserved for your uncle Dave's fruitless attempts to liven the mood at Christmas lunch. But this is different. This is for a good cause. Save the Children Charity are encouraging everyone to wear Christmas sweaters to raise awareness and money for their initiatives, which include implementing education and nutrition programs worldwide. So many people have got involved, and you can get involved by donating just £2 to Save the Children at ChristmasJumperDay.org or by texting donate to 700050. If you want to get involved on your finest vest of a diet, but don't forget, while we're saving the children, we're also trying to save the planet. So no need to drop a few quid on the high street for a jumper you'll never wear again. That money's better spent on a donation. I just glued some googly eyes on the sweater your mum gave you two Christmases ago that you pretended to love. Or borrow one of Uncle Dave's. He'll have plenty. In fact, this is one of his right here.