Just two days before Christmas, Bristol Palin gave birth to daughter Sailor Grace. The 25-year-old controversial daughter of former Republican vice-presidential candidate Sarah Palin took to Instagram on Thursday to announce the news. However, Bristol has yet to confirm her daughter's father in spite of strong assumptions that her ex-fiancé Dakota Meyer is the dad.

After sharing the news of her second pregnancy in June, Bristol Palin has been plagued with criticisms about being an unmarried mom despite her vows of celibacy until marriage and abstinence-only advocacy. But Palin remained unfazed, saying she didn't regret being a mom for the second time while unmarried. And on Thursday, she shared a photo of herself and her daughter in the hospital, People reported.

"My sweet Sailor Grace was born yesterday, our family couldn't be more complete," she captioned her Instagram post.

Sailor Grace's arrival officially makes Palin a proud mom-of-two. In 2008, she welcomed her first child, son Tripp, with ex-boyfriend Levi Johnston, who she recently faced in court for their unending custody and child support battle. According to Radar Online (citing The Frontiersman), the estranged couple had a court appearance in Palmer, Alaska on Monday to sort out their custody-battle agreement.

"The parties have reached a final custody and visitation agreement for residing in the same community and have executed, personally and through their attorneys, a confidential stipulation regarding custody," a legal document filed on Nov. 16 read, as previously reported. "Therefore, the only pending issue to be addressed by the Court is the matter of past and future child support."

Meanwhile, following the birth of Palin's daughter on Wednesday, unconfirmed dad Dakota Meyer took to Twitter on Thursday and shared a snap of a sleeping baby held by someone who wore the same hospital gown as Palin, as seen on her Instagram post, FOX News noted.

"Best Christmas present ever!! I couldn't be more proud of this little blessing," Meyer wrote on Twitter.

Despite the strong assumptions that Meyer is Sailor Grace's dad, Palin has not admitted that he is truly the father. But as per Starpulse, several sources insisted that the exes got pregnant during their engagement. And while Meyer remained mum about his former relationship with Palin, he did everything he can to erase Palin's trace in his life including deleting all mentions and photos of his former ladylove from his social media accounts.

Moreover, 27-year-old Meyer, who's a Medal of Honor recipient, also took a jab at his baby mama on Facebook. The meme, which has now been deleted, had a statement that read, "I know what I bring to the table. Trust me when I say I'm not afraid to eat alone," as quoted by The Hollywood Gossip.