Throw on an oxford ($14.99, down from $28.90) and you instantly look like a grownup. Read: no more kids' table for you.
You don't want to look too responsible, though, so add some fun and carefree hoops ($38) that say "I can't be trusted with the turkey."
Reminiscent of the wash you wore in high school, this Topshop pair ($80) will prompt run ins with old classmates to exclaim in wonder, "You haven't changed a bit!"
Tie this Pucci scarf around your jeans ($48, from $96) like Sienna, and when your judgy cousin asks where you got it, say Europe. (Technically, it was shipped from Net-A-Porter in the UK.)
Charge the airport gate and beat the fam to the dessert table with these unassuming Vera Wang Lavender Label flats ($195) + free shipping with code HOLIDAY.
Disguise eye rolling, tears and cat naps with these cool AJ Morgan sunglasses ($20).
Sienna Millerlooks for even more inspiration.