"I am so in love with her," Tila, 33, told Us. "She's so perfect and beautiful."
Isabella was reportedly born weighing seven pounds and two ounces. She arrived at 7:05PM on November 16.
Tila first announced her pregnancy in April when she posted a photo of her small baby bump on Facebook.
"I truly feel that my baby has saved my life, and I will do whatever it takes to give my little baby the whole entire world!" she told the magazine at the time.
"I just want my baby to be proud of me and to know how much I love him or her. To love someone else unconditionally is one of the best feelings in the entire world, and I hope I will have plenty more pregnancies to come."
Two months later, Tila admitted she was hoping to have a son. However, in July, she found out she was expecting a daughter.
"For a long time I thought I wanted a baby boy, but that's because most of my family members wanted me to have a boy," she told Us. "However, deep, deep down inside of my heart I knew that I wanted a baby girl! I wanted a little mini-me so that when she grows up I could do everything with her and be able to talk to her about anything!"
Tila reportedly added that she wants to raise a "very strong and independent" woman just like herself who will "be a leader" and "stand up for all of the people who cannot stand up for themselves." Tila had also said she wants her little girl to grow up to be humble, loving and respectful.
A Shot at Love with Tila Tequila debuted on MTV in October 2007 and aired for two seasons, with its second edition premiering in April 2008. The reality dating series featured the bisexual model trying to find romance with 16 straight men and 16 lesbian women competing for her heart.