The Drunk In Love singer launched the sets just in time for Valentine's Day.
Beyonce is selling 40 dollar (£24) sets - containing one black boxer and brief, two black boxers or two black briefs - on her website.
Fans can purchase a pair of black boxers or briefs with "mine" written on them in pink print, with a matching pair of black boxers or briefs saying "yours".
The Crazy In Love singer also sells tank tops, t-shirts and sweatshirts on her website, as well as her music and fragrance.
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It's difficult to deal with a highly competitive colleague. Every time you submit work, they try to find ways to outperform you. Although you have no interest in pitting your talent against theirs, this other person thinks very differently. Ignoring them won't be possible. A good way to disarm this pest is to invite them out for coffee. Describe what you've observed and ask for a truce. Irrational people are often thrown off balance when their behaviour is addressed in a direct manner.More