Beyoncé's Twins Rumi and Sir Look So Grown Up in Previously Unseen Snaps

From Oprah Magazine

• To commemorate her 38th birthday, superstar Beyoncé shared a plethora of brand new snaps on her website, taken from her personal photo album.

• The singer shared several new photos of her children—adorable twins Rumi and Sir, and style icon Blue Ivy.

• Zo? Kravitz was overjoyed to find out that Beyoncé had dressed up as her mom, Lisa Bonet, for Halloween.

Beyoncé decided to give fans a behind-the-scenes look at her family life in honor of her 38th birthday.

As well as sharing a set of photos taken at Blue Ivy's 7th birthday party, which had a chic rose gold-theme, the singer also gave fans a glimpse of baby twins Rumi and Sir.

Snapped at sister Blue Ivy's party, both Rumi and Sir looked seriously sweet as they spent time with their mom. While Rumi was pictured smiling as she stood up by herself, while holding on to a chair, Sir was lifted into the air by Beyoncé. Both children are growing up so fast.

For Halloween, the superstar revealed that she'd dressed up as '90s icon and actress Lisa Bonet. Rumi and Sir became the perfect accessorizes for the costume as Beyoncé dressed them to look like a baby Zo? Kravitz, Bonet's daughter with Lenny Kravitz. Needless to say, Beyoncé won Halloween.

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Fans will be excited to see Beyoncé's photos of Rumi and Sir, especially as the twins usually stay out of the spotlight. Head over to Beyonce.com to see even more behind-the-scenes snaps from the singer.