The 19-year-old model entered Malibu's SOBA Recovery Center, a drug and alcohol treatment centre, on Monday (13Apr15), with early reports suggesting she was seeking treatment for "excessive partying".
However, Baldwin took to Twitter.com to clarify the rumours, and wrote, "'Intensive partying' haha Apparently I'm in rehab for intensive partying soooo I'm just going to lay pretty low for a bit and maybe get some frozen yogurt."
But she did confirm that she has begun a two-week stay at the rehab centre.
She wrote, "I checked myself into Soba for two weeks to just get away for a little bit. I'm not much a party cat but I am here (to) deal with... some emotional trauma and getting the intensive therapy I needed in order to recover.
"Someday I’ll feel ready to share my story openly without feeling the way I do. Right now I just needed a breather. I need a change to work on myself and gather all the tools... I need to overcome everything that I had been through and rid myself of all the pain I locked away in unreachable places."
Ireland is the only daughter of former couple Baldwin and Basinger, who split in 2002 after nearly 10 years of marriage.