If you were to tell me there was a 6,000-person wait list for something, I'd imagine it was for a similarly priced designer handbag or a first-class ticket on a space shuttle to the moon. I would not, at any point, imagine that thousands of people were virtually lining up for a pair of baby PJs.

But that's just what they did. And, after one look at them, I can honestly see why. The coveted "Rainbow Heart" pajamas from Primary [1] — the children's clothing company known for its simple, high-quality, gender-neutral styles in a rainbow of colors — are downright adorable and affordable. Retailing for $20, the newly launched footed PJs are made with 100-percent combed cotton and feature handy nonskid soles. Even better, if your kiddo has graduated the 24-month sizing, the brand also released PJ separates in the same print for sizes two through 12, with a total cost of just $32.

Because everyone on the wait list was notified immediately after they debuted on the site this weekend, I don't imagine they'll stay in stock for long.

Primary Rainbow Heart Footie Pajamas [2] ($20)

Primary Long-Sleeve Rainbow Heart PJ Top [3] ($16)

Primary Rainbow Heart PJ Pant [4] ($16)