Wedding parties brighten up when there's a star among the crowd. InStyle [1] has rounded up the most stylish celeb bridesmaids and what they wore down the aisle.

Something old, something new, something borrowed, and something blue may be the traditional bridal good luck charms — but a few extra-lucky brides have also walked down the aisle with something VIP.

That's right: Some brides get to party down at the bachelorette [2] bash with Lauren Conrad [3], or get Lady Gaga [4] to swap out her couture for a standard-issue (but very pretty) bridesmaid gown. Stars like Sarah Jessica Parker [5] and Rihanna [6], stood as bridesmaids for their assistants while others, such as Lena Dunham and Gaga, supported their childhood besties on their Big Day.

Head over to InStyle [7] to check out the full roundup of celeb bridesmaids.

More from InStyle:

• See the Most Memorable Celeb Engagement Rings [8]
• Celebrity Weddings Worth Reminiscing Over [9]
• How to Style Your Hair for a Wedding [10]