Jennifer Lopez is all set to celebrate a milestone birthday on Wednesday.

And on Tuesday, Alex Rodriguez dedicated a sweet Instagram post to fiance Jennifer Lopez, in honor of her 50th.

PHOTOS: Jennifer Lopez Gallery

The post began with a personal message from the 43-year-old, followed by a collection of videos from the couple’s time together.

The former MLB slugger kept his post’s caption simple, an alluded to the title of Jennifer’s tour, ‘It’s My Party’ with his opening. 

Flip the Page to See his Sweet Message: