News Bristol Palin Welcomes A Baby Girl By Raphael Chestang 1:32 PM PST, December 24, 2015 Now Playing hh:mm:ss Bristol Palin just became a mom for the second time! View this post on InstagramMy sweet Sailor Grace was born yesterday, our family couldn't be more complete 💕A post shared by Bristol Palin (@bsmp2) on Dec 24, 2015 at 12:27pm PSTThe 25-year-old reality star gave birth to her first daughter on Wednesday, according to a message she shared on Instagram.WATCH: Bristol Palin Is Naming Her Baby Girl Sailor"My sweet Sailor Grace was born yesterday," she wrote on Thursday. "Our family couldn't be more complete."Sailor joins 6-year-old brother Tripp, Bristol's son with ex-fiance Levi Johnston. View this post on InstagramMy heart just doubledA post shared by Bristol Palin (@bsmp2) on Dec 24, 2015 at 12:28pm PSTBristol has had the name for her baby girl picked out for at least a month. She posted an Instagram pic in November showing items she already embroidered with her unborn daughter's name.WATCH: Bristol Palin Shows Off 5-Month Baby BumpAt the time, Palin joked that Kristin Cavallari ripped off her idea when she named her baby Saylor, despite the difference in spelling.