If someone asks you for clothing as a gift and you don't know their size, don't stress — fashion guru Stacy London has a foolproof way to get it right every time.

"There are two categories in which if you go oversized — even if it's a little too oversized — it's not really an insult, it's a cuddle factor," Stacy says. "Knitwear and sleepwear." 

If you want to avoid clothing altogether, though, Stacy recommends accessories. Watch the video for her recommendations!