Jennifer Aniston<\/strong> is in the middle of a whirlwind press tour for the fourth season of The Morning Show<\/em> \u2014 but she\u2019s already fretting about losing good friend and costar Reese Witherspoon<\/strong> to another project, a source tells the National Enquirer<\/em>.<\/p>\n \u201cReese can\u2019t wait to team up with Nicole Kidman<\/strong> for season 3<\/a> of Big Little Lies<\/em>,\u201d explains the source, \u201cand it\u2019s giving Jen major anxiety that her costar\u2019s already got one foot out the door.\u201d<\/p>\n Witherspoon, 49, confirmed that writing is underway for the return of her HBO hit \u2014 which last aired in 2019 \u2014 during an appearance on the Tonight Show<\/em><\/a> on Thursday, September 11.<\/p>\n \u201cIt\u2019s exciting to get the gang back together and have everybody start talking about it. It\u2019s really fun,\u201d the Oscar winner told Jimmy Fallo<\/strong>n.<\/p>\n Aniston, 56, \u201cloves\u201d Kidman, 58, \u201cand she\u2019s certainly not going bitter about her and Reese having this success [with Big Little Lies<\/em>],\u201d the source says, \u201cbut she can\u2019t help but worry it might push Reese away from The Morning Show<\/em>. Their relationship is the heart of the show, so naturally it makes her anxious to see Reese working on other things.\u201d<\/p>\n The actresses, who have known each other since they played sisters on Friends<\/em> 25 years ago, are both executive producers of the Apple TV+ series<\/a>, which returns on September 17<\/a>.\u00a0 (Season 5 has not yet been confirmed.) \u201cWe\u2019ve grown up together,\u201d Aniston told Good Morning America<\/em><\/a> on September 15.<\/p>\n![\"\"](\"https:\/\/staging.nationalenquirer.com\/wp-content\/uploads\/2025\/09\/MEGA1288280_026-scaled.jpg\")