Photo: Kevin Mazur/VF17/WireImage

Reese Witherspoonis wishing her “big sis"Jennifer Anistona happy birthday!
TheYour Place or Minestar shared asweet birthday messageto herMorning Showcostar on her 54th birthday Saturday.
“Happy Birthday@jenniferaniston! What a gift to get to work with my big sis every day on@themorningshow,” Witherspoon, 46, wrote as a reference to when she guest starred onFriendsas Rachel’s (Aniston) sister, Jill Greene.
“You always give the best advice and endless LOVE and support. I 💖 you, Jen! Everyone wish her a Happy Birthday!! 🎂💫” she concluded the caption.
Along with the birthday tribute, Witherspoon shared several photos of her and Aniston from their time onThe Morning Show, as well as one of them in 2014 at the Stand Up to Cancer telecast.
Kevin Mazur/American Broadcasting Companies Inc via WireImage

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On Instagram Wednesday, theLegally Blondestar posted a series ofbehind-the-scenes photosfromThe Morning Show, including one snugly shot of her and Aniston.
“Last days of shooting @themorningshow! Season 3 is on the WAY!” Witherspoon, 46, captioned the carousel.
No premiere date has been announced for season 3 ofThe Morning Show.
source: people.com