Celebrities on social media: The best pictures from December 2016

Josh Duhamel made it snow in California for his wife Fergie and son Axl. "Somebody was super happy to have hot cocoa…" wrote the singer.
Photo: Instagram/@fergie

Blake Lively celebrated Ryan Reynolds' star on Hollywood's Walk of Fame by posting the most loving message on Instagram. "Proud is a pitiful word to describe how I felt today. @vancityreynolds The permanence of your impact is undeniable ...Always has been, but now we have a fancy to show for it. "
Photo: Instagram/@blakelively

Beyonce popped backstage to visit Mariah Carey after attending the "All I Want For Christmas" singer's holiday concert in New York.
Photo: Instagram/@mariahcarey

Queen Bey wasn't the only famous face at Mariah's show! Shania Twain also visited the singer backstage.
Photo: Instagram/@shaniatwain

Gigi Hadid wished close pal Taylor Swift a Happy Birthday by posting a cute throwback picture and sweet message that read, "Happy Birthday to you T!!
So inspired every day by what an incredible friend you are !!!!!!!! love you & celebrating with u in spirit xx"
Photo: Instagram/@gigihadid

Also on the birthday train was Reese Witherspoon, who wished her Big Little Lies co-star Zoë Kravitz a Happy Birthday on Dec 1.
Photo: Instagram/@reesewitherspoon