From WENN.com

The 30 Rock star, who was previously married to actress Kim Basinger, proposed to the 28-year-old yoga instructor in May (12) after just several months of dating, but thoughtful dad Baldwin didn't want his 16-year-old daughter to read about his marriage plans in the media, so he requested her consent before popping the question.

His former mother-in-law, Ann Basinger, tells the National Enquirer, ""Alec would not have proposed marriage if Ireland had not given her approval - and she did. The ladies have a lot in common. They both love Alec. They get along great.""

Baldwin split from Basinger in 2002.