"The Five-Year Engagement"
is now in theaters, documenting a couple's ups and down during their extended betrothal period -- and it really got us thinking about the most memorable recent celebrity engagements!

One standout is, of course,  Brad Pitt and Angelina Jolie!

After seven years and six children, the couple finally agreed to make it "official." Brad designed the ring and reportedly popped the question in front of the kids. Talk about a family bonding experience!

Another engagement to remember is that of Prince William and Kate Middleton, who celebrate their first wedding anniversary on Sunday! In October of 2010, the Prince proposed to the future Duchess with an 18 carat sapphire ring which had belonged to his mother, Princess Diana. Aww!

Click "Launch Gallery" above to find out what other stars -- like Britney Spears and one unforgettable "Bachelor" couple -- made our list of most memorable engagements!

Who is your favorite couple on the list? Sound off below!

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