1. Justin Timberlake celebrated his mom's birthday by posting this adorable photo of the two of them.
2. Barbra Streisand paid tribute to her former dog Sadie.
3. Rob Lowe reminded us that he is ageless.
4. Paul McCartney shared this photo of himself playing with his daughter, Mary.
5. La Toya Jackson remembered the good times she had with her brother, Michael Jackson.
I recall this day so well we were in San Francisco having lobster and being silly! How I miss those days! #TBT
6. Susan Sarandon posted this seductive photo.
#TBT
7. Speaking of seductive, Craig Ferguson was apparently a "sexy priest" in the early '90s.
1993. Just before I was expelled from the seminary. #TBT
8. Faith Hill also took us back to the early '90s (1994 to be exact), when big hair and velvet dresses were THE LOOK.
'Top Female Vocalist' at the 29th annual @ACMawards! #ACMawards50 #TBT