And yes, this model went all out with various costumes but we have picked out our favourite four and they are to die for.
The seven-month-old got to channel Micky mouse, pose as the sweetest hot dog and Banana and finally, cool off with a super cute Hawaiian beach costume.
Teigen shared the sweet photos via her Instagram page and later revealed plans to donate the costumes to the less privileged.
All the same, Luna was simply adorable for days and rocked our favourite looks this year.
ALSO READ: Model takes baby Luna to her first NBA game
If she was a little exasperated by her mum's efforts, she hid it pretty well, right until the end when she protested and started to throw a tantrum.
We, however, have something to look forward to next year. Chrissy and John Legendwelcomed Luna Simone in April this year and have kept their fans thrilled by showing her off on social media.