In the slew of snaps, the singer, 53, posed in a teal dress with red bows on it. The "Let's Get Loud" songstress took a selfie in front of a long table, presumably where she and her family were having a holiday meal, and she also posed in front of her Christmas tree.
"Merry Christmas!!!!" the A-lister captioned the snaps.
Of course, people loved to see the star in a good mood. One person wrote, "Merry Christmas to Afflecks✨😍," while another added, "Soooo preeetttyyyyyy 😭😍 Merry Christmas to the Afflecks! 🤍."
A third person gushed, "So stunning and classy always 🙌🙌🔥."
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After breaking off their engagement in 2004, the two rekindled in 2021.
"It's a beautiful outcome that this has happened in this way at this time in our lives where we can really appreciate and celebrate each other and respect each other," Lopez previously said of their reconciliation.
The entrepreneur added, "We always did, but we have even more of an appreciation because we know that life can take you in different directions."
As OK! previously reported, the couple is trying to make sure their blended family feels comfortable with all the new changes happening.
"They have to sort things out with both sets of kids and their exes, but they would love to have all the kids together with them as one big family and are working on that now," an insider explained of their plans.