Chrissy Teigen‘s throwing a birthday bash for her hubby John Legend tonight, and she’s asking for help from her fans on what to wear … for her son.

Chrissy shared a couple beyond adorable shots of the couple’s 7-month-old son Miles in a black tuxedo and a white one, adding … “need your help dressing mini-john. Which one!”

She also added a poll — which as of now has nearly 400,000 votes — and the baby white tux is ahead big time with 67 percent.

John’s 40th bday was actually in late December, but the family’s celebrating Saturday night … and there’s no doubt Miles’ outfit will be a hit.

No word if Luna is dressing as mini-Chrissy … but we wouldn’t doubt it.