I'm not sure if this will be any help, but I've found that feminine accoutrements tend to outweigh a lot of gender signifiers. This is all purely my opinion based on the mountains of books I read and tutorials I watched.
Pay attention to other women your age and what they wear. Pay attention to fashion through magazines and shows, and the flattering colors that match your season coloring. Different colors rotate in and out of trend. Darker reds like wine, but with more brownish hues are supposed to be on trend right now for instance. Be mindful of your outfits, make sure they don't clash with themselves. Patterns and. color opposites can be tricky when you incorporate them.
Get clothes that flatter an inverted triangle figure. Skirts and dresses that are a-line, flouncy, and around knee length draw attention to your lower half and accentuate your hips. Boot cut, straight leg and boyfriend jeans work well too. 3/4 sleeves shorten your arms, tops with scoop or v neckline diminish the width of the shoulder. Find a store near you that sells larger sized women's shoes, they exist, models and WNBA players need shoes too. If you don't have a pair of UGGs, or nice boots, get them and wear them, it's winter.
Skinny jeans and pencil skirts make broad shoulders look bigger, as do camis, halters, tube tops, and boat necklines. Essentially you want to wear embellishments on the areas that are smaller to fake an hourglass figure. There's such a large variety of styles because women can be pear shaped, rectangular and the inverted triangle as well.
If you're not good with makeup, go to Sephora or a department store like Macy's, and have a professional demo their line of products, then buy the ones you like from them. Watch what they choose for you, why, and how they apply it. Too much or badly applied makeup is worse than none.
Walk slower with shorter strides, and practice as though you were on a balance beam. Gliding around with grace is more effective than you might think.
Read You Just Don't Understand, by Deborah Tannen. It thoroughly explores the differences in how women tend to speak compared to men. Public or private, personal or professional, many of the habits that you have grown up with in your conversational intonation and how and when you speak are more significant than the pitch of your voice when people are trying to read gender from you.
Confidence matters. Most people are attracted to it more than any other quality.
Not all women can be Barbies, most cheat anyway (Spanx[emoji6]). Instead of comparing yourself to an idyllic stereotype, embrace the feminine qualities you have and accentuate them with sparkles or embellishments or patterns.
Accessories are very important. Bigger purses will look better on larger/taller women. Earrings and manicured nails are synonymous for feminine IMO.
If there's any particular part of your anatomy you feel screams MALE, there are ways to cover it up. Prominent Adam's apples can be covered by scarves, or reverse contour makeup or other clothes. Women have hyoid cartilage on their trachea as well, just not usually very much. Widows peaks and high foreheads can be handled with bangs, hats, beanies, etc. Using the color opposite of your five o'clock shadow as your foundation, orangish if you have paler skin like me, will make any stubble very difficult to see on your face when it grows in.
Don't wear heels unless you can walk in them. Flats are on trend right now anyway. If you must wear heels and are having issues with balance, there are exercises you can do to strengthen your ankles to help eliminate any wobbling. One of the simplest is pretending you are drawing the alphabet letter by letter with your foot, alternating left and right. Many dancers and models do these to prepare for shows and performances they have to do in heels.
That's all I can think of for now [emoji2]
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