wished her mother,Demi Moore
, a happy birthday on Tuesday with an incredibly sweet message on Instagram.The 26-year-old actress posted an old picture of herself being held by Demi and captioned it:"Momma, today is your birthday and I thought you should know. I don't know where I would be without you. "You've taught me so much and helped me become the woman I am today, so thank you."
She continued: "You are my idol, my mentor, my best friend, my partner in crime.You are so strong, wise and compassionate, hilariously funny and disarmingly beautiful
...I hope I can embody all of those things the way you do. "I love you mommy. Happy Birthday." Rumer is the eldest daughter of Demi and ex-husbandBruce Willis
. Although Bruce and Demi split in 2000 the family have remained close. The pair gave their youngest daughter Tallulah"an ultimatum"
earlier in 2014, warning her that if she didn't check herself into rehab, they would "take away everything from her", according toPeople.
The 20-year-old later went to The Meadows in Arizona for treatment for alcohol and substance abuse.Rumer was recentlyrumoured to be dating former Hollyoaks star Ricky Whittle
. In July, the pair were said to have been dating for around three months after being introduced by friends. "They are inseparable and using the 'L' word already," a source toldThe Sunday Mirror
. "Rumer sees him as a permanent fixture in her life."