Britney Spears' emotional Christmas reunion, Mariah Carey's Santa moment top Hollywood's holiday celebrations

Hollywood's biggest names decked the halls with boughs of holly and enjoyed the Christmas holiday on Wednesday. 

The pop star shared a video compilation of moments with Jayden on Instagram, writing in the caption, "Best Christmas of my life !!! I haven't seen my boys in 2 years !!! Tears of joy and literally in shock everyday koo koo crazy so in love and blessed !!! I'm speechless thank you Jesus !!!"

Reese Witherspoon had the luxury of spending quality time with all three of her children, Ava and Deacon, whom she shares with ex-husband Ryan Phillipe, and Tennessee with ex-husband Jim Toth, at a festive Christmas lunch.

"Merry Christmas from snowy Switzerland!" she captioned the post, adding a video which showed off her snow-filled property.

David also shared a video on his Instagram of the "traditional cutting of the turkey that mums been cooking all day!!"

Demi Moore had an extra-special Christmas this year, as her youngest daughter Tallulah, 30, got engaged to musician Justin Acee. Moore shared intimate footage of her daughter walking into a romantic proposal, rose petals sprawled across the stone walkway. 

A separate video showed the moment Acee got down on one knee.

Rob Lowe and his family had a well-spent Christmas and Hanukkah together in a tropical location. Although the actor was born into a Christian family, his wife, Sheryl Berkoff, is Jewish.